Especially in the second half. Backbreaking crushing physical “move the chains” 6-7 minute drives for touchdown.
6 yards …. 5 yards … 8 yards … 11 yards … 4 yards …. 7 yards … and a cloud of dust.
Besides keeping the Irish Defense fresh and off the field, such drives mentally break the opponent into submission.
It all starts with the offensive line.
You know it when you see it.