AA 9866 then UA 2164 at O'Hare
Bloomington-Normal → Chicago → Phoenix
Timetable, Chicago time
13:11AA 9866 from Bloomington-Normal at the gate
11:08UA 2164 to Phoenix leaves the gate
21 h 57 apart on the timetable, overnight
UA 2164 leaves 21 h 57 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.