diff --git a/server/gameconnection.py b/server/gameconnection.py
index a1e128279..2f3d9f6b1 100644
--- a/server/gameconnection.py
+++ b/server/gameconnection.py
@@ -505,7 +505,7 @@ async def handle_game_ended(self, *args: list[Any]):
         self.finished_sim = True
         await self.game.check_game_finish(self.player)
 
-    async def handle_rehost(self, *args: list[Any]):
+    async def handle_rehost(self, *args: Any):
         """
         Signals that the user has rehosted the game. This is currently unused but
         included for documentation purposes.
@@ -519,26 +519,35 @@ async def handle_launch_status(self, status: str):
         """
         pass
 
-    async def handle_bottleneck(self, *args: list[Any]):
+    async def handle_bottleneck(self, code: str, *args: str):
         """
-        Not sure what this command means. This is currently unused but
-        included for documentation purposes.
+        Not entirely sure what this command means. Seems to be sent when a
+        player is getting behind on data, slowing down the game.
+
+        Example:
+        ```python
+        {
+            "command": "Bottleneck",
+            "target": "game",
+            "args": ["data", "19508", "517268,516974,344419", "5980.1"],
+        }
+        ```
         """
-        pass
+        self._logger.debug("Bottleneck: %s", list((code, *args)))
 
-    async def handle_bottleneck_cleared(self, *args: list[Any]):
+    async def handle_bottleneck_cleared(self):
         """
-        Not sure what this command means. This is currently unused but
-        included for documentation purposes.
+        Not entirely sure what this command means. Probably sent when the game
+        is no longer being slowed down due to players being behind on data.
         """
-        pass
+        self._logger.debug("BottleneckCleared")
 
-    async def handle_disconnected(self, *args: list[Any]):
+    async def handle_disconnected(self, *args: Any):
         """
         Not sure what this command means. This is currently unused but
         included for documentation purposes.
         """
-        pass
+        self._logger.debug("Disconnected: %s", list(args))
 
     async def handle_chat(self, message: str):
         """
diff --git a/tests/unit_tests/test_gameconnection.py b/tests/unit_tests/test_gameconnection.py
index 26c47a230..f39b9facb 100644
--- a/tests/unit_tests/test_gameconnection.py
+++ b/tests/unit_tests/test_gameconnection.py
@@ -350,6 +350,34 @@ async def test_handle_action_AIOption_not_host(
     game.set_ai_option.assert_not_called()
 
 
+async def test_handle_action_Bottleneck(game_connection: GameConnection):
+    args = ["ack", "17654", "466996,436136,443631,402513,302866", "14222.5"]
+    await game_connection.handle_action("Bottleneck", args)
+    await game_connection.handle_bottleneck(*args)
+
+    # 517268,516974,344419 are the player ids of other players (not the sender)
+    # 5980.1 is an increasing value, maybe total data sent?
+    args = ["data", "19508", "517268,516974,344419", "5980.1"]
+    await game_connection.handle_action("Bottleneck", args)
+    await game_connection.handle_bottleneck(*args)
+
+    args = ["readiness", "1", "234112", "5220.7"]
+    await game_connection.handle_action("Bottleneck", args)
+    await game_connection.handle_bottleneck(*args)
+
+
+async def test_handle_action_BottleneckCleared(game_connection: GameConnection):
+    args = []
+    await game_connection.handle_action("BottleneckCleared", args)
+    await game_connection.handle_bottleneck_cleared(*args)
+
+
+async def test_handle_action_Chat(game_connection: GameConnection):
+    args = ["Hello World!"]
+    await game_connection.handle_action("Chat", args)
+    await game_connection.handle_chat(*args)
+
+
 async def test_handle_action_ClearSlot(
     game: Game,
     game_connection: GameConnection
@@ -370,6 +398,18 @@ async def test_handle_action_ClearSlot_not_host(
     game.clear_slot.assert_not_called()
 
 
+async def test_handle_action_Disconnected(game_connection: GameConnection):
+    args = ["foo", "bar"]
+    await game_connection.handle_action("Disconnected", args)
+    await game_connection.handle_disconnected(*args)
+
+
+async def test_handle_action_GameFull(game_connection: GameConnection):
+    args = []
+    await game_connection.handle_action("GameFull", args)
+    await game_connection.handle_game_full(*args)
+
+
 async def test_handle_action_GameResult_calls_add_result(
     game: Game,
     game_connection: GameConnection
@@ -491,6 +531,12 @@ async def test_handle_action_EnforceRating(
     assert game.enforce_rating is True
 
 
+async def test_handle_action_Rehost(game_connection: GameConnection):
+    args = ["foo", "bar"]
+    await game_connection.handle_action("Rehost", args)
+    await game_connection.handle_rehost(*args)
+
+
 async def test_handle_action_TeamkillReport(
     game: Game,
     game_connection: GameConnection,
@@ -722,19 +768,6 @@ async def test_handle_action_IceMsg_for_non_connected(
     await game_connection.handle_action("IceMsg", [2, "the message"])
 
 
-@pytest.mark.parametrize("action", (
-    "Rehost",
-    "Bottleneck",
-    "BottleneckCleared",
-    "Disconnected",
-    "Chat",
-    "GameFull"
-))
-async def test_handle_action_ignored(game_connection: GameConnection, action):
-    # No exceptions raised
-    await game_connection.handle_action(action, [])
-
-
 async def test_handle_action_invalid(game_connection: GameConnection):
     game_connection.abort = mock.AsyncMock()