Let's say Tom Brady is getting told different plays, how does the radio in the quarterback helmet work with the offensive coach, Josh McDaniels. Say McDaniels wanted to do a QB sneak, does he ask Bill Belichick and then tells Brady to do that play or does Belichick tells Brady directly? Also, can Brady communicate through his headset or can he only hear? I know there are coaches at the top of the stadium, who tells Belichick to challenge a play, if necessary, do they speak only to Belichick directly also? Just wanted to know, thanks very much.