In a game-long, driving rain on a natural turf field against a Texas team that had been ranked No. 1 around mid-season and featured future NFL corners, Chuck Long threw for 461 yards and SIX touchdowns to six different receivers in the 1984 Freedom Bowl in Anaheim. Iowa won the game 55-17, BTW.
Those are the facts. Another fact is that the current Iowa QB couldn't carry Long's shoestrings. Long had one bad game in his career. He had multiple great games, including ones in which he drove his team down the field in the waning moments for wins, not the least of which was his clutch drive to set up the game-winning FG in 1985 when #1 Iowa beat #2 Michigan, FWIW.
And the very next week after that Ohio State game the OP references, Iowa played an Illinois team that had held top-ten Michigan to a 3-3 tie in its last game, Long completed 22 of 30 for 289 yards and three TDs, including tosses of 49 and 43 yards to Robert Smith in a 59-0 rout. Iowa rolled up 250 yards of offense and led 35-0 at the end of the FIRST QUARTER. It was 49-0 at the half, and the final was 59-0. Iowa could have scored 100 that day. Again, just for a little context.