AA 255 then DL 1634 at LAX
New York JFK → Los Angeles → Chicago O'Hare
Timetable, Los Angeles time
15:49AA 255 from New York JFK at the gate
15:30DL 1634 to Chicago O'Hare leaves the gate
23 h 41 apart on the timetable, overnight
DL 1634 leaves 23 h 41 after AA 255 arrives on the timetable: more than half a day, so not a connection we count.