I don’t know why this never occurred to me before. so quarterbacks have headsets in their helmets so they can communicate with the coaching staff. I was always under the impression that they only used it before the play, just to prevent using a runner, but is the coach ever on the microphone during the play? maybe telling the quarterback where somebody is open if he can’t see it
No. The headsets are disabled when the play starts or when the play clock goes below 15 seconds.
It does get disabled to the Quarterback, however I believe the Head Coach can flip between channels to talk to Offensive and/or Defensive coordinators during the play.