(again, not including bowl games)
Part of that was obviously that it was on ESPNU, but here's the highest draws for 2020 that didn't include a P5
1. Army/Navy 4.91M
2. UCF/Memphis 1.9M
3. Cincy/Tulsa 1.88M
4. Cincy/UCF 1.58M
5. Cincy/Houston 1.39M
6. Navy/Tulane 1.35M
7. BYU/Coastal Carolina 1.21M
Possible I'm missing a random USF/Tulsa or something but I looked through all the teams that I'd think might draw large audiences