Its a whole mess of corporate entanglement that includes: ESPN, ABC, Hulu and its tough to figure out exactly whats included. Obviously stuff on CBS or Fox isn't included....Further, I think that perhaps something like "if a game is on ABC primetime, then its not on ESPN" however I have no proof of that.

Separately, Hulu has a "Live TV" option but that isn't included in the Disney/ESPN combo (I don't think so?)