I assume you mean if the Pats are controlling the game with a 2-3 score lead. Wow, that would be a huge embarrassment for PManning and his legacy to be benched in the AFCCG and replaced by Osweiler. Personally, I believe Kubiak has painted himself into a corner with the "Peyton didn't play well because he was injured" narrative. I think he's stuck with Peyton.
The only way I see Peyton being benched is if the Broncos (or Pats) are up by 3 scores with 4 minutes to play. At that point putting Osweiler in would allow the Denver coaches to see if Osweiler is worth re-signing and allow Elway to spin that it had little to do with Manning.