I don’t get it either. Lombardi, Tom Landry, didn’t use headsets.
I think they are supposed to be using headsets to talk to their guys who are sitting upstairs in the stadium, who get a different view of the game. But again begs questions about why didn’t a great coach like Lombardi need to do this??? Has the game changed, has strategy changed that you need to talk to guys upstairs to make decisions down on the field???
They also talk to the QB and Captain of the Defense.........................