If you have watched the Amazon series All or Nothing about the Dallas Cowboys, one thing that may have stuck out were some awkward moments with the assistant coaches. In particular, there were times when Derek Dooley seemed to defer to Dez Bryant in meetings, leaving a real question of who was really in charge of things.
That is never a good thing. And Bryant was not the only veteran that may have had too much influence on things. Jason Witten apparently told the staff when he was going to leave the field (basically never) on offense.