diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4f3442494..25f4cde44 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,7 +47,7 @@ jobs:
         run: SKIP=no-commit-to-branch pre-commit run --all-files
 
       - name: Test docs
-        run: make -C ./docs html
+        run: make -C ./docs html SPHINXOPTS="-W --keep-going"
 
       - name: Test code
         run: pytest --maxfail=1 --typeguard-packages=osmnx --cov=./osmnx --cov-report=xml --cov-report=term-missing --verbose
diff --git a/.github/workflows/test-minimal.yml b/.github/workflows/test-minimal.yml
index 7fcf28218..170b99172 100644
--- a/.github/workflows/test-minimal.yml
+++ b/.github/workflows/test-minimal.yml
@@ -46,7 +46,7 @@ jobs:
 
       - name: Test docs
         run: |
-          make -C ./docs html
+          make -C ./docs html SPHINXOPTS="-W --keep-going"
           python -m sphinx -b linkcheck ./docs/source ./docs/build/linkcheck
 
       - name: Test code
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 27bf41e94..2f4efb3f6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -40,4 +40,5 @@ repos:
     rev: "v1.8.0"
     hooks:
       - id: mypy
-        additional_dependencies: [matplotlib, pandas-stubs, types-requests]
+        additional_dependencies:
+          [matplotlib, pandas-stubs, pytest, types-requests]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8b14026f..388a51dee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,17 @@
 
 ## 2.0.0 (Unreleased)
 
-- add type annotations throughout the package for user type hinting and type checking (#1107)
+- add type annotations to all public and private functions throughout the package (#1107)
 - remove functionality previously deprecated in v1 (#1113)
+- drop Python 3.8 support (#1106)
+- make which_result function parameter consistently able to accept a list throughout package (#1113)
+- make utils_geo.bbox_from_point function return a tuple of floats for consistency with rest of package (#1113)
+- fix bug in \_downloader.\_save_to_cache function usage (#1107)
+- fix bug in handling requests ConnectionError when querying Overpass status endpoint (#1113)
+- minor fixes throughout to address inconsistencies revealed by type enforcement (#1107 #1114)
+- rename osm_xml module to \_osm_xml to make it private, as all its functions are private (#1113)
+- rename private \_downloader module to \_http (#1114)
+- remove unnecessary private \_api module (#1114)
 
 ## 1.9.0 (Unreleased)
 
diff --git a/docs/source/internals-reference.rst b/docs/source/internals-reference.rst
index 327ca328f..61a8f5211 100644
--- a/docs/source/internals-reference.rst
+++ b/docs/source/internals-reference.rst
@@ -3,14 +3,6 @@ Internals Reference
 
 This is the complete OSMnx internals reference for developers, including private internal modules and functions. If you are instead looking for a user guide to OSMnx's public API, see the :doc:`user-reference`.
 
-osmnx._api module
------------------
-
-.. automodule:: osmnx._api
-    :members:
-    :private-members:
-    :noindex:
-
 osmnx.bearing module
 --------------------
 
@@ -27,14 +19,6 @@ osmnx.distance module
     :private-members:
     :noindex:
 
-osmnx._downloader module
-------------------------
-
-.. automodule:: osmnx._downloader
-    :members:
-    :private-members:
-    :noindex:
-
 osmnx.elevation module
 ----------------------
 
@@ -75,6 +59,14 @@ osmnx.graph module
     :private-members:
     :noindex:
 
+osmnx._http module
+------------------
+
+.. automodule:: osmnx._http
+    :members:
+    :private-members:
+    :noindex:
+
 osmnx.io module
 ---------------
 
diff --git a/docs/source/user-reference.rst b/docs/source/user-reference.rst
index b2ebc7ca8..cb7e1bf19 100644
--- a/docs/source/user-reference.rst
+++ b/docs/source/user-reference.rst
@@ -1,114 +1,112 @@
-User Reference
-==============
-
-This is the User Reference for the OSMnx package. If you are looking for an introduction to OSMnx, read the :doc:`getting-started` guide.
-
-This guide describes the usage of OSMnx's public API. Every function can be accessed via ``ox.module_name.function_name()`` and many can also be accessed directly via ``ox.function_name()`` as a shortcut.
-
-osmnx.bearing module
---------------------
-
-.. automodule:: osmnx.bearing
-    :members:
-
-osmnx.distance module
----------------------
-
-.. automodule:: osmnx.distance
-    :members:
-
-osmnx.elevation module
-----------------------
-
-.. automodule:: osmnx.elevation
-    :members:
-
-osmnx.features module
----------------------
-
-.. automodule:: osmnx.features
-    :members:
-
-osmnx.geocoder module
----------------------
-
-.. automodule:: osmnx.geocoder
-    :members:
-
-osmnx.graph module
-------------------
-
-.. automodule:: osmnx.graph
-    :members:
-
-osmnx.io module
----------------
-
-.. automodule:: osmnx.io
-    :members:
-
-osmnx.plot module
------------------
-
-.. automodule:: osmnx.plot
-    :members:
-
-osmnx.projection module
------------------------
-
-.. automodule:: osmnx.projection
-    :members:
-
-osmnx.routing module
------------------------
-
-.. automodule:: osmnx.routing
-    :members:
-
-osmnx.settings module
----------------------
-
-.. automodule:: osmnx.settings
-    :members:
-
-osmnx.simplification module
----------------------------
-
-.. automodule:: osmnx.simplification
-    :members:
-
-osmnx.speed module
-------------------
-
-.. automodule:: osmnx.speed
-    :members:
-
-osmnx.stats module
-------------------
-
-.. automodule:: osmnx.stats
-    :members:
-
-osmnx.truncate module
----------------------
-
-.. automodule:: osmnx.truncate
-    :members:
-
-osmnx.utils module
-------------------
-
-.. automodule:: osmnx.utils
-    :members:
-
-osmnx.utils_geo module
-----------------------
-
-.. automodule:: osmnx.utils_geo
-    :members:
-
-osmnx.utils_graph module
-------------------------
-
-.. automodule:: osmnx.utils_graph
-    :members:
+User Reference
+==============
+
+This is the User Reference for the OSMnx package. If you are looking for an introduction to OSMnx, read the :doc:`getting-started` guide. This guide describes the usage of OSMnx's public API.
+
+osmnx.bearing module
+--------------------
+
+.. automodule:: osmnx.bearing
+    :members:
+
+osmnx.distance module
+---------------------
+
+.. automodule:: osmnx.distance
+    :members:
+
+osmnx.elevation module
+----------------------
+
+.. automodule:: osmnx.elevation
+    :members:
+
+osmnx.features module
+---------------------
+
+.. automodule:: osmnx.features
+    :members:
+
+osmnx.geocoder module
+---------------------
+
+.. automodule:: osmnx.geocoder
+    :members:
+
+osmnx.graph module
+------------------
+
+.. automodule:: osmnx.graph
+    :members:
+
+osmnx.io module
+---------------
+
+.. automodule:: osmnx.io
+    :members:
+
+osmnx.plot module
+-----------------
+
+.. automodule:: osmnx.plot
+    :members:
+
+osmnx.projection module
+-----------------------
+
+.. automodule:: osmnx.projection
+    :members:
+
+osmnx.routing module
+-----------------------
+
+.. automodule:: osmnx.routing
+    :members:
+
+osmnx.settings module
+---------------------
+
+.. automodule:: osmnx.settings
+    :members:
+
+osmnx.simplification module
+---------------------------
+
+.. automodule:: osmnx.simplification
+    :members:
+
+osmnx.speed module
+------------------
+
+.. automodule:: osmnx.speed
+    :members:
+
+osmnx.stats module
+------------------
+
+.. automodule:: osmnx.stats
+    :members:
+
+osmnx.truncate module
+---------------------
+
+.. automodule:: osmnx.truncate
+    :members:
+
+osmnx.utils module
+------------------
+
+.. automodule:: osmnx.utils
+    :members:
+
+osmnx.utils_geo module
+----------------------
+
+.. automodule:: osmnx.utils_geo
+    :members:
+
+osmnx.utils_graph module
+------------------------
+
+.. automodule:: osmnx.utils_graph
+    :members:
diff --git a/osmnx/__init__.py b/osmnx/__init__.py
index e21f2e708..ccf41e870 100644
--- a/osmnx/__init__.py
+++ b/osmnx/__init__.py
@@ -1,4 +1,56 @@
-"""OSMnx init."""
+# ruff: noqa: F401,PLC0414
+"""Define the OSMnx package's namespace."""
 
-from ._api import *  # noqa: F401, F403
-from ._version import __version__  # noqa: F401
+# expose the package version
+from ._version import __version__ as __version__
+
+# expose the old pre-v2 API for backwards compatibility. this allows common
+# functionality to be accessed directly via the ox.function_name() shortcut
+# by exposing these functions directly in the package's namespace.
+from .bearing import add_edge_bearings as add_edge_bearings
+from .bearing import orientation_entropy as orientation_entropy
+from .distance import nearest_edges as nearest_edges
+from .distance import nearest_nodes as nearest_nodes
+from .elevation import add_edge_grades as add_edge_grades
+from .elevation import add_node_elevations_google as add_node_elevations_google
+from .elevation import add_node_elevations_raster as add_node_elevations_raster
+from .features import features_from_address as features_from_address
+from .features import features_from_bbox as features_from_bbox
+from .features import features_from_place as features_from_place
+from .features import features_from_point as features_from_point
+from .features import features_from_polygon as features_from_polygon
+from .features import features_from_xml as features_from_xml
+from .geocoder import geocode as geocode
+from .geocoder import geocode_to_gdf as geocode_to_gdf
+from .graph import graph_from_address as graph_from_address
+from .graph import graph_from_bbox as graph_from_bbox
+from .graph import graph_from_place as graph_from_place
+from .graph import graph_from_point as graph_from_point
+from .graph import graph_from_polygon as graph_from_polygon
+from .graph import graph_from_xml as graph_from_xml
+from .io import load_graphml as load_graphml
+from .io import save_graph_geopackage as save_graph_geopackage
+from .io import save_graph_xml as save_graph_xml
+from .io import save_graphml as save_graphml
+from .plot import plot_figure_ground as plot_figure_ground
+from .plot import plot_footprints as plot_footprints
+from .plot import plot_graph as plot_graph
+from .plot import plot_graph_route as plot_graph_route
+from .plot import plot_graph_routes as plot_graph_routes
+from .plot import plot_orientation as plot_orientation
+from .projection import project_gdf as project_gdf
+from .projection import project_graph as project_graph
+from .routing import k_shortest_paths as k_shortest_paths
+from .routing import shortest_path as shortest_path
+from .simplification import consolidate_intersections as consolidate_intersections
+from .simplification import simplify_graph as simplify_graph
+from .speed import add_edge_speeds as add_edge_speeds
+from .speed import add_edge_travel_times as add_edge_travel_times
+from .stats import basic_stats as basic_stats
+from .utils import citation as citation
+from .utils import log as log
+from .utils import ts as ts
+from .utils_graph import get_digraph as get_digraph
+from .utils_graph import get_undirected as get_undirected
+from .utils_graph import graph_from_gdfs as graph_from_gdfs
+from .utils_graph import graph_to_gdfs as graph_to_gdfs
diff --git a/osmnx/_api.py b/osmnx/_api.py
deleted file mode 100644
index cd9ff8c50..000000000
--- a/osmnx/_api.py
+++ /dev/null
@@ -1,50 +0,0 @@
-# ruff: noqa: F401
-"""Expose most common parts of public API directly in package namespace."""
-
-from .bearing import add_edge_bearings
-from .bearing import orientation_entropy
-from .distance import nearest_edges
-from .distance import nearest_nodes
-from .elevation import add_edge_grades
-from .elevation import add_node_elevations_google
-from .elevation import add_node_elevations_raster
-from .features import features_from_address
-from .features import features_from_bbox
-from .features import features_from_place
-from .features import features_from_point
-from .features import features_from_polygon
-from .features import features_from_xml
-from .geocoder import geocode
-from .geocoder import geocode_to_gdf
-from .graph import graph_from_address
-from .graph import graph_from_bbox
-from .graph import graph_from_place
-from .graph import graph_from_point
-from .graph import graph_from_polygon
-from .graph import graph_from_xml
-from .io import load_graphml
-from .io import save_graph_geopackage
-from .io import save_graph_xml
-from .io import save_graphml
-from .plot import plot_figure_ground
-from .plot import plot_footprints
-from .plot import plot_graph
-from .plot import plot_graph_route
-from .plot import plot_graph_routes
-from .plot import plot_orientation
-from .projection import project_gdf
-from .projection import project_graph
-from .routing import k_shortest_paths
-from .routing import shortest_path
-from .simplification import consolidate_intersections
-from .simplification import simplify_graph
-from .speed import add_edge_speeds
-from .speed import add_edge_travel_times
-from .stats import basic_stats
-from .utils import citation
-from .utils import log
-from .utils import ts
-from .utils_graph import get_digraph
-from .utils_graph import get_undirected
-from .utils_graph import graph_from_gdfs
-from .utils_graph import graph_to_gdfs
diff --git a/osmnx/_downloader.py b/osmnx/_http.py
similarity index 98%
rename from osmnx/_downloader.py
rename to osmnx/_http.py
index e25938f5a..71ccdb564 100644
--- a/osmnx/_downloader.py
+++ b/osmnx/_http.py
@@ -55,11 +55,7 @@ def _save_to_cache(
     """
     if settings.use_cache:
         if not ok:  # pragma: no cover
-            utils.log("Did not save to cache because response status_code is not OK")
-
-        elif response_json is None:  # pragma: no cover
-            utils.log("Did not save to cache because response_json is None")
-
+            utils.log("Did not save to cache because HTTP status code is not OK.", level=lg.WARNING)
         else:
             # create the folder on the disk if it doesn't already exist
             cache_folder = Path(settings.cache_folder)
diff --git a/osmnx/_nominatim.py b/osmnx/_nominatim.py
index aff4b85e8..a340415c4 100644
--- a/osmnx/_nominatim.py
+++ b/osmnx/_nominatim.py
@@ -9,7 +9,7 @@
 
 import requests
 
-from . import _downloader
+from . import _http
 from . import settings
 from . import utils
 from ._errors import InsufficientResponseError
@@ -69,7 +69,7 @@ def _download_nominatim_element(
             for key in sorted(query):
                 params[key] = query[key]
         else:  # pragma: no cover
-            msg = "query must be a dict or a string"
+            msg = "each query must be a dict or a string"  # type: ignore[unreachable]
             raise TypeError(msg)
 
     # request the URL, return the JSON
@@ -112,12 +112,12 @@ def _nominatim_request(
     # prepare Nominatim API URL and see if request already exists in cache
     url = settings.nominatim_endpoint.rstrip("/") + "/" + request_type
     prepared_url = str(requests.Request("GET", url, params=params).prepare().url)
-    cached_response_json = _downloader._retrieve_from_cache(prepared_url)
+    cached_response_json = _http._retrieve_from_cache(prepared_url)
     if isinstance(cached_response_json, list):
         return cached_response_json
 
     # pause then request this URL
-    domain = _downloader._hostname_from_url(url)
+    domain = _http._hostname_from_url(url)
     utils.log(f"Pausing {pause} second(s) before making HTTP GET request to {domain!r}")
     time.sleep(pause)
 
@@ -127,7 +127,7 @@ def _nominatim_request(
         url,
         params=params,
         timeout=settings.timeout,
-        headers=_downloader._get_http_headers(),
+        headers=_http._get_http_headers(),
         **settings.requests_kwargs,
     )
 
@@ -141,9 +141,9 @@ def _nominatim_request(
         time.sleep(error_pause)
         return _nominatim_request(params, request_type, pause, error_pause)
 
-    response_json = _downloader._parse_response(response)
+    response_json = _http._parse_response(response)
     if not isinstance(response_json, list):
         msg = "Nominatim API did not return a list of results."
         raise InsufficientResponseError(msg)
-    _downloader._save_to_cache(prepared_url, response_json, response.ok)
+    _http._save_to_cache(prepared_url, response_json, response.ok)
     return response_json
diff --git a/osmnx/_overpass.py b/osmnx/_overpass.py
index a20c12f00..6f4641e44 100644
--- a/osmnx/_overpass.py
+++ b/osmnx/_overpass.py
@@ -15,7 +15,7 @@
 from shapely.geometry import MultiPolygon
 from shapely.geometry import Polygon
 
-from . import _downloader
+from . import _http
 from . import projection
 from . import settings
 from . import utils
@@ -142,7 +142,7 @@ def _get_overpass_pause(
         url = base_endpoint.rstrip("/") + "/status"
         response = requests.get(
             url,
-            headers=_downloader._get_http_headers(),
+            headers=_http._get_http_headers(),
             timeout=settings.timeout,
             **settings.requests_kwargs,
         )
@@ -391,19 +391,19 @@ def _overpass_request(
     response_json : dict or list
     """
     # resolve url to same IP even if there is server round-robin redirecting
-    _downloader._config_dns(settings.overpass_endpoint)
+    _http._config_dns(settings.overpass_endpoint)
 
     # prepare the Overpass API URL and see if request already exists in cache
     url = settings.overpass_endpoint.rstrip("/") + "/interpreter"
     prepared_url = str(requests.Request("GET", url, params=data).prepare().url)
-    cached_response_json = _downloader._retrieve_from_cache(prepared_url)
+    cached_response_json = _http._retrieve_from_cache(prepared_url)
     if isinstance(cached_response_json, dict):
         return cached_response_json
 
     # pause then request this URL
     if pause is None:
         this_pause = _get_overpass_pause(settings.overpass_endpoint)
-    domain = _downloader._hostname_from_url(url)
+    domain = _http._hostname_from_url(url)
     utils.log(f"Pausing {this_pause} second(s) before making HTTP POST request to {domain!r}")
     time.sleep(this_pause)
 
@@ -413,7 +413,7 @@ def _overpass_request(
         url,
         data=data,
         timeout=settings.timeout,
-        headers=_downloader._get_http_headers(),
+        headers=_http._get_http_headers(),
         **settings.requests_kwargs,
     )
 
@@ -428,9 +428,9 @@ def _overpass_request(
         time.sleep(this_pause)
         return _overpass_request(data, pause, error_pause)
 
-    response_json = _downloader._parse_response(response)
+    response_json = _http._parse_response(response)
     if not isinstance(response_json, dict):  # pragma: no cover
         msg = "Overpass API did not return a dict of results."
         raise InsufficientResponseError(msg)
-    _downloader._save_to_cache(prepared_url, response_json, response.ok)
+    _http._save_to_cache(prepared_url, response_json, response.ok)
     return response_json
diff --git a/osmnx/elevation.py b/osmnx/elevation.py
index f84b7d8fe..b8d75358a 100644
--- a/osmnx/elevation.py
+++ b/osmnx/elevation.py
@@ -14,7 +14,7 @@
 import pandas as pd
 import requests
 
-from . import _downloader
+from . import _http
 from . import settings
 from . import utils
 from . import utils_graph
@@ -200,7 +200,7 @@ def add_node_elevations_google(
         {node: f'{data["y"]:.5f},{data["x"]:.5f}' for node, data in G.nodes(data=True)}
     )
     n_calls = int(np.ceil(len(node_points) / batch_size))
-    domain = _downloader._hostname_from_url(settings.elevation_url_template)
+    domain = _http._hostname_from_url(settings.elevation_url_template)
     utils.log(f"Requesting node elevations from {domain!r} in {n_calls} request(s)")
 
     # break the series of coordinates into chunks of batch_size
@@ -250,12 +250,12 @@ def _elevation_request(url: str, pause: float) -> dict[str, Any]:
     response_json : dict
     """
     # check if request already exists in cache
-    cached_response_json = _downloader._retrieve_from_cache(url)
+    cached_response_json = _http._retrieve_from_cache(url)
     if isinstance(cached_response_json, dict):
         return cached_response_json
 
     # pause then request this URL
-    domain = _downloader._hostname_from_url(url)
+    domain = _http._hostname_from_url(url)
     utils.log(f"Pausing {pause} second(s) before making HTTP GET request to {domain!r}")
     time.sleep(pause)
 
@@ -264,13 +264,13 @@ def _elevation_request(url: str, pause: float) -> dict[str, Any]:
     response = requests.get(
         url,
         timeout=settings.timeout,
-        headers=_downloader._get_http_headers(),
+        headers=_http._get_http_headers(),
         **settings.requests_kwargs,
     )
 
-    response_json = _downloader._parse_response(response)
+    response_json = _http._parse_response(response)
     if not isinstance(response_json, dict):  # pragma: no cover
         msg = "Elevation API did not return a dict of results."
         raise InsufficientResponseError(msg)
-    _downloader._save_to_cache(url, response_json, response.ok)
+    _http._save_to_cache(url, response_json, response.ok)
     return response_json
diff --git a/osmnx/features.py b/osmnx/features.py
index ac617956a..39b4e3f4f 100644
--- a/osmnx/features.py
+++ b/osmnx/features.py
@@ -263,16 +263,8 @@ def features_from_place(
     -------
     gdf : geopandas.GeoDataFrame
     """
-    # create a GeoDataFrame with the spatial boundaries of the place(s)
-    if isinstance(query, (str, dict, list)):
-        # if string (place name) or dict (structured place query), this is a
-        # single place. if list, it contains multiple places to retrieve.
-        gdf_place = geocoder.geocode_to_gdf(query, which_result=which_result)
-    else:  # pragma: no cover
-        msg = "query must be dict, string, or list of strings"
-        raise TypeError(msg)
-
     # extract the geometry from the GeoDataFrame to use in query
+    gdf_place = geocoder.geocode_to_gdf(query, which_result=which_result)
     polygon = gdf_place["geometry"].unary_union
     utils.log("Constructed place geometry polygon(s) to query Overpass")
 
diff --git a/osmnx/geocoder.py b/osmnx/geocoder.py
index 2a278aa73..b772bcb30 100644
--- a/osmnx/geocoder.py
+++ b/osmnx/geocoder.py
@@ -101,10 +101,6 @@ def geocode_to_gdf(
     gdf : geopandas.GeoDataFrame
         a GeoDataFrame with one row for each query
     """
-    if not isinstance(query, (str, dict, list)):  # pragma: no cover
-        msg = "query must be a string, or dict, or list of strings/dicts"
-        raise TypeError(msg)
-
     if isinstance(query, list):
         # if query is a list of queries but which_result is int/None, then
         # turn which_result into a list with same length as query list
@@ -123,16 +119,9 @@ def geocode_to_gdf(
         msg = "which_result length must equal query length"
         raise ValueError(msg)
 
-    # for each query and which_result value
-    gdf = gpd.GeoDataFrame()
-    for q, wr in zip(query_list, which_result_list):
-        # ensure each query is correct type
-        if not isinstance(q, (str, dict)):  # pragma: no cover
-            msg = "each query must be a string or dict"
-            raise TypeError(msg)
-
-        # geocode each query then add to GeoDataFrame as a new row
-        gdf = pd.concat([gdf, _geocode_query_to_gdf(q, wr, by_osmid)])
+    # geocode each query then add to GeoDataFrame as a new row
+    gdfs = (_geocode_query_to_gdf(q, wr, by_osmid) for q, wr in zip(query_list, which_result_list))
+    gdf = pd.concat(gdfs)
 
     # reset GeoDataFrame index and set its CRS
     gdf = gdf.reset_index(drop=True).set_crs(settings.default_crs)
diff --git a/osmnx/graph.py b/osmnx/graph.py
index 54ebc6938..705f3ed72 100644
--- a/osmnx/graph.py
+++ b/osmnx/graph.py
@@ -313,16 +313,8 @@ def graph_from_place(
     function to automatically make multiple requests: see that function's
     documentation for caveats.
     """
-    # create a GeoDataFrame with the spatial boundaries of the place(s)
-    if isinstance(query, (str, dict, list)):
-        # if string (place name) or dict (structured place query), this is a
-        # single place. if list, it contains multiple places to retrieve.
-        gdf_place = geocoder.geocode_to_gdf(query, which_result=which_result)
-    else:  # pragma: no cover
-        msg = "query must be dict, string, or list of strings"
-        raise TypeError(msg)
-
     # extract the geometry from the GeoDataFrame to use in query
+    gdf_place = geocoder.geocode_to_gdf(query, which_result=which_result)
     polygon = gdf_place["geometry"].unary_union
     utils.log("Constructed place geometry polygon(s) to query Overpass")
 
diff --git a/osmnx/plot.py b/osmnx/plot.py
index 066fee720..3820d855c 100644
--- a/osmnx/plot.py
+++ b/osmnx/plot.py
@@ -5,6 +5,7 @@
 from collections.abc import Iterable
 from collections.abc import Sequence
 from pathlib import Path
+from types import ModuleType
 from typing import Any
 from typing import Literal
 from typing import overload
@@ -26,6 +27,8 @@
 
 # matplotlib is an optional dependency needed for visualization
 try:
+    mpl: ModuleType | None
+    import matplotlib as mpl
     import matplotlib.pyplot as plt
     from matplotlib import cm
     from matplotlib import colormaps
@@ -34,7 +37,7 @@
     from matplotlib.figure import Figure
     from matplotlib.projections.polar import PolarAxes
 except ImportError:  # pragma: no cover
-    plt = cm = colormaps = colors = None  # type: ignore[assignment]
+    mpl = None
 
 
 def get_colors(
@@ -1068,6 +1071,6 @@ def _verify_mpl() -> None:
     -------
     None
     """
-    if cm is None or colors is None or plt is None or colormaps is None:  # pragma: no cover
+    if mpl is None:  # pragma: no cover
         msg = "matplotlib must be installed as an optional dependency for visualization"
         raise ImportError(msg)
diff --git a/pyproject.toml b/pyproject.toml
index 045073a08..1a06d993f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,10 +60,10 @@ path = "osmnx/_version.py"
 [tool.mypy]
 cache_dir = "~/.cache/mypy"
 ignore_missing_imports = true
-implicit_reexport = true
 python_version = "3.9"
 strict = true
 warn_no_return = true
+warn_unreachable = true
 
 [tool.ruff]
 cache-dir = "~/.cache/ruff"
diff --git a/tests/lint_test.sh b/tests/lint_test.sh
index 222d1fdb5..65b6804b1 100644
--- a/tests/lint_test.sh
+++ b/tests/lint_test.sh
@@ -16,7 +16,7 @@ hatch build --clean
 twine check --strict ./dist/*
 
 # build the docs
-make -C ./docs html
+make -C ./docs html SPHINXOPTS="-W --keep-going"
 #python -m sphinx -b linkcheck ./docs/source ./docs/build/linkcheck
 
 # run the tests and report the test coverage
diff --git a/tests/test_osmnx.py b/tests/test_osmnx.py
index 19e892206..ab6790507 100755
--- a/tests/test_osmnx.py
+++ b/tests/test_osmnx.py
@@ -370,13 +370,13 @@ def test_api_endpoints() -> None:
 
     # test good and bad DNS resolution
     ox.settings.timeout = 1
-    ip = ox._downloader._resolve_host_via_doh("overpass-api.de")
-    ip = ox._downloader._resolve_host_via_doh("AAAAAAAAAAA")
+    ip = ox._http._resolve_host_via_doh("overpass-api.de")
+    ip = ox._http._resolve_host_via_doh("AAAAAAAAAAA")
     _doh_url_template_default = ox.settings.doh_url_template
     ox.settings.doh_url_template = "http://aaaaaa.hostdoesntexist.org/nothinguseful"
-    ip = ox._downloader._resolve_host_via_doh("overpass-api.de")
+    ip = ox._http._resolve_host_via_doh("overpass-api.de")
     ox.settings.doh_url_template = None
-    ip = ox._downloader._resolve_host_via_doh("overpass-api.de")
+    ip = ox._http._resolve_host_via_doh("overpass-api.de")
     ox.settings.doh_url_template = _doh_url_template_default
 
     # Test changing the Overpass endpoint.