AA 9866 then UA 350 at O'Hare
Bloomington-Normal → Chicago → Philadelphia
Timetable, Chicago time
13:11AA 9866 from Bloomington-Normal at the gate
11:03UA 350 to Philadelphia leaves the gate
21 h 52 apart on the timetable, overnight
UA 350 leaves 21 h 52 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.