AA 9866 then OO 317 at O'Hare
Marquette → Chicago → Birmingham (Alabama)
Timetable, Chicago time
10:30AA 9866 from Marquette at the gate
10:14OO 317 to Birmingham (Alabama) leaves the gate
23 h 44 apart on the timetable, overnight
OO 317 leaves 23 h 44 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.