Counter Value Explanation in Paper

[hshreeshail]

In section 3.2 of the paper, it is written:

At inference, we drive the sequence generation by replacing the predicted counter value, ˆc, 
with the ground truth timing information, c∗, to produce a stable output sequence.

Is this a typo? Is it supposed to mean at train instead of at inference? Because at inference, we would not have access to the length of the pose video and hence the ground truth counter value, right?