AA 4643 then UA 3916 at O'Hare
Norfolk → Chicago → New Orleans
Timetable, Chicago time
13:52AA 4643 from Norfolk at the gate
07:00UA 3916 to New Orleans leaves the gate
17 h 08 apart on the timetable, overnight
UA 3916 leaves 17 h 08 after AA 4643 arrives on the timetable: more than half a day, so not a connection we count.