AA 9950 then DL 4929 at O'Hare
Philadelphia → Chicago → New York JFK
Timetable, Chicago time
13:49AA 9950 from Philadelphia at the gate
10:30DL 4929 to New York JFK leaves the gate
20 h 41 apart on the timetable, overnight
DL 4929 leaves 20 h 41 after AA 9950 arrives on the timetable: more than half a day, so not a connection we count.