OK.... When the head coach calls a play, he's doing nothing?
lol...Holden, your previous post makes' it look like you don't watch the onfield action, that you are only watching the sidelines. To tell the truth, Very few people would worry about what the 2nd and 3rd string players' are doing. Most are watching the action on the field, which usually only has a delay of 15-30 seconds' between plays.
And BTW, anymore in professional football, the Offensive coordinator calls the plays' than the HC, more often that not. The plays' come straight down from the booth.