WBAY in Green Bay also occasionally airs a second game on their 2.3 feed for Live Well Network; it must depend on capacity or how many ESPN networks the local cable provider carries. Probably the conference relationships also have plenty to do with it; as the Quad Cities are right on the edge of Big 12 territory due to Iowa State, they allow the station to do two-feed broadcasts so all their games are broadcast.
Of course, judging from how godawful that Illinois/Ohio State game went, WQAD probably wished it could've gotten another game from ESPN.