AA 6284 then UA 3916 at O'Hare
Des Moines → Chicago → New Orleans
Timetable, Chicago time
11:10AA 6284 from Des Moines at the gate
07:00UA 3916 to New Orleans leaves the gate
19 h 50 apart on the timetable, overnight
UA 3916 leaves 19 h 50 after AA 6284 arrives on the timetable: more than half a day, so not a connection we count.