AA 3474 then DL 1556 at O'Hare
Mosinee → Chicago → Los Angeles
Timetable, Chicago time
08:00AA 3474 from Mosinee at the gate
07:45DL 1556 to Los Angeles leaves the gate
23 h 45 apart on the timetable, overnight
DL 1556 leaves 23 h 45 after AA 3474 arrives on the timetable: more than half a day, so not a connection we count.