A related question if you would: do you know what his plays calls are? Because when that substitution hits the huddle, no time at all is spent before they break to the LOS. I remember doing it, and even now see college teams spending a lot of time calling the play,and then calling it a second time to make sure all understand. But Tech just goes.
Good observation. The other thing I notice is that the more CPJ trusts a quarterback, the more he allows him to audible at the line. I find myself wondering how extensive the audible options are. Is the QB simply allowed to change a run to a pass or vice-versa, or is he allowed to change blocking assignments, or just instruct who is picking up the blitz once he reads the defense, or how much is he allowed to do? I suspect that almost every play has a specific audible option depending on the defense.
One of the things that gets interesting as Tech gets deeper into the game is that the A-backs start to signal a lot to the rest of the team. It appears they are calling blocking assignments but I am not sure.
This is actually where it is kind of fun to not know a lot of details about the offense because sometimes the mystery of it is more fascinating. I know that to CPJ it is all pretty basic, which is why he can call it all from his head, but to us laypeople it is like some kind of Zen art.