Yeah, he should have made the Knox play.
Part of me does wonder though why Knox kept moving to Josh’s left when Josh was clearly scrambling/moving to his right. There was plenty of space to move with the QB’s direction.
Drive was doomed when Brady went run on 1st down and then emptied the backfield on 2nd and 3rd down.
Broncos knew there was no threat of run on 2nd and 3rd down.
A play action on 1st would have been ideal.