AA 6486 then UA 2124 at O'Hare
Detroit → Chicago → Los Angeles
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
15:47UA 2124 to Los Angeles leaves the gate
22 h 18 apart on the timetable, overnight
UA 2124 leaves 22 h 18 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.