AA 3304 then UA 4789 at O'Hare
Miami → Chicago → Fargo
Timetable, Chicago time
19:55AA 3304 from Miami at the gate
19:45UA 4789 to Fargo leaves the gate
23 h 50 apart on the timetable, overnight
UA 4789 leaves 23 h 50 after AA 3304 arrives on the timetable: more than half a day, so not a connection we count.