AA 5340 then UA 3916 at O'Hare
Knoxville → Chicago → New Orleans
Timetable, Chicago time
09:10AA 5340 from Knoxville at the gate
07:00UA 3916 to New Orleans leaves the gate
21 h 50 apart on the timetable, overnight
UA 3916 leaves 21 h 50 after AA 5340 arrives on the timetable: more than half a day, so not a connection we count.