If ABC doesn't break away in Iowa and Nebraska, it'll be aired on ESPN News regardless. News has no live game on the schedule while U and 2 do.
A 3.5 hour window should be plenty enough more times than not, outside of a game going to OT. Today is quite possilby that "not" chance.
We're with Tuco, and have ESPN Watch app ready to go. Chromecast is awesome.