AA 4996 then UA 3916 at O'Hare
Cedar Rapids → Chicago → New Orleans
Timetable, Chicago time
12:30AA 4996 from Cedar Rapids at the gate
07:00UA 3916 to New Orleans leaves the gate
18 h 30 apart on the timetable, overnight
UA 3916 leaves 18 h 30 after AA 4996 arrives on the timetable: more than half a day, so not a connection we count.