AA 6486 then UA 374 at O'Hare
Detroit → Chicago → Los Angeles
Timetable, Chicago time
17:29AA 6486 from Detroit at the gate
14:00UA 374 to Los Angeles leaves the gate
20 h 31 apart on the timetable, overnight
UA 374 leaves 20 h 31 after AA 6486 arrives on the timetable: more than half a day, so not a connection we count.