AF963 is a big bird (772 or 77W) currently scheduled to arrive at 20:15 but is typically 20 min late.
If the the plane has heavy load and you travel in Y in the middle of the pack, it seems difficult to even get to the train on time.
You have to disembark, walk to immigration where the line can be significant, walk to the AIr&Rail ticket office, argue to be put on the last train, walk to the station and board the train.