AA 595 then UA 3916 at O'Hare
Philadelphia → Chicago → New Orleans
Timetable, Chicago time
11:04AA 595 from Philadelphia at the gate
07:00UA 3916 to New Orleans leaves the gate
19 h 56 apart on the timetable, overnight
UA 3916 leaves 19 h 56 after AA 595 arrives on the timetable: more than half a day, so not a connection we count.