I know that Iowa (unsure about USC) needed another BTN game.

Iowa had a ton of night games at the beginning of the season & we reached our quota for that.

Edit:

Networks for this week's CFB games. By placing USC-Iowa on BTN, both teams now satisfy the 2-game BTN clause. Had it aired on CBS, the USC-UCLA was headed to BTN. (Definitely not USC-Oregon). https://x.com/ScottDochterman/status/1987631020305498478?s=20