UA 3915 then AA 3377 at O'Hare
Miami → Chicago → Fargo
Timetable, Chicago time
22:25UA 3915 from Miami at the gate
22:05AA 3377 to Fargo leaves the gate
23 h 40 apart on the timetable, overnight
AA 3377 leaves 23 h 40 after UA 3915 arrives on the timetable: more than half a day, so not a connection we count.