Hand signals?
How does that work. Aren’t most offensive players looking down field or across the line and listening for audibles. They aren’t looking at the quarterback for hand signals. How are down linemen going to see hand signals.
Something sounds screwy.
The down linemen listen for the audibles. They even audible between each other. The receivers and backs look for the hand or body signals. When playing on the road with the crowd noise, they often can't even hear the QB audibles.