AA 3039 then UA 4789 at O'Hare
Houston → Chicago → Fargo
Timetable, Chicago time
20:21AA 3039 from Houston at the gate
19:45UA 4789 to Fargo leaves the gate
23 h 24 apart on the timetable, overnight
UA 4789 leaves 23 h 24 after AA 3039 arrives on the timetable: more than half a day, so not a connection we count.