Throughout Ben Roethlisberger’s lengthy career, he has had a number of offensive coordinators calling games. They’ve all been different in their style and approach, but another factor differentiates one from the other.
Where they call the plays.
When Roethlisberger came into the league, his offensive coordinator was Ken Whisenhunt, his first year at the job, and Whisenhunt would call all the plays from the coaches box. Communication at that time was different, and relied on phone communication between coach and player during the game.
After Whisenhunt departed, Bruce Arians took over, and Arians, like Todd Haley and Randy Fichtner who followed, all called plays from the sideline.