AA 468 then UA 3916 at O'Hare
Philadelphia → Chicago → New Orleans
Timetable, Chicago time
14:20AA 468 from Philadelphia at the gate
07:00UA 3916 to New Orleans leaves the gate
16 h 40 apart on the timetable, overnight
UA 3916 leaves 16 h 40 after AA 468 arrives on the timetable: more than half a day, so not a connection we count.