AA 5079 then DL 9960 at Atlanta
Philadelphia → Atlanta → New York LaGuardia
Timetable, Atlanta time
10:52AA 5079 from Philadelphia at the gate
06:00DL 9960 to New York LaGuardia leaves the gate
19 h 08 apart on the timetable, overnight
DL 9960 leaves 19 h 08 after AA 5079 arrives on the timetable: more than half a day, so not a connection we count.