Quote Originally Posted by arnie_uk View Post
it doesn't happen at home.
Under the assumption that Birk can't hear the QB with crowd noise, and can't afford to duck his head to watch for hand signals, perhaps Yanda is signalling to both Flacco and Birk to start the snap count, which would then go off of beats, not sound. Just a guess. If Birk is calling out the defense and protections, I suppose he has to survey in front of him.