Currently doing research to confirm this, because of course there's nothing substantial out there to help confirm this faster..............
But 1960 Iowa may have the NCAA record for both consecutive weeks playing a ranked opponent in a season and consecutive weeks to start a season facing a ranked opponent (ranked at the time of play, which counts as a win over a ranked opponent).
Iowa played 9 games that season...........their first 8 opponents were ranked when they played. They finished the season against a 2-8 Notre Dame team.
So far, the next closest I've seen is 5 consecutive weeks.
But 1960 Iowa may have the NCAA record for both consecutive weeks playing a ranked opponent in a season and consecutive weeks to start a season facing a ranked opponent (ranked at the time of play, which counts as a win over a ranked opponent).
Iowa played 9 games that season...........their first 8 opponents were ranked when they played. They finished the season against a 2-8 Notre Dame team.
So far, the next closest I've seen is 5 consecutive weeks.