AA 3390 then DL 2503 at O'Hare
Greensboro → Chicago → New York LaGuardia
Timetable, Chicago time
21:13AA 3390 from Greensboro at the gate
20:25DL 2503 to New York LaGuardia leaves the gate
23 h 12 apart on the timetable, overnight
DL 2503 leaves 23 h 12 after AA 3390 arrives on the timetable: more than half a day, so not a connection we count.