One more time.
I sat right behind the Pats bench in the front row Sec 110 row 1 seat 18 for the Bears game which was the point of discussion in the old post you quoted.
It's easy to watch a play (takes seconds) and flip your gaze to the players. I love the opportunity to feel like I'm on the field with the players. Would that I could read BB's lips when he talks to the D. But I digress...
Vinnie talks with Cassel, stands next to him, not the OC or Brady, the vast majority of the game. If the Pats are in a close game, after talking with Josh and BB (Cassell & Vinnie are rarely involved; the few time I see them there they are looking on, not talking...and that was not at the Bears game), Brady spends most of the defense time pacing, walking alone away from the offense to the end of the defense's bench and then warming up.
If the Pats are ahead and the game ending, he spends a higher % of time chatting with players, siting with the OL and joking with WRs/RBs.
My opinion of what happens during the game is based on those observational facts.
Yours is based on pure conjecture driven by a strange obsession with the perceived inadequacies of OCs (Zampeze, then Weis, now McDaniels).