It's obvious that AA compels Tav not to tell anyone at the epilogue party anything that can turn companions against AA. Just like Cazador ordered Astarion not to ask for help, while he was seducing his victims.
It's not and the devs could've added two lines to the waking up scene to make it certain if they wished. We literally have an example of Cazador asking his friend for help only for his master to kill his friend in front of him as punishment so it's not some automatic compulsion thing either.
Hell they could've given the player a dialogue option asking for help at the party only for the companions to react as though they said something else with a narrator line about the compulsion.
