AA 6486 then UA 1502 at O'Hare
Detroit → Chicago → Cleveland
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
14:21UA 1502 to Cleveland leaves the gate
20 h 52 apart on the timetable, overnight
UA 1502 leaves 20 h 52 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.