UA 5831 then AA 3974 at O'Hare
Traverse City → Chicago → Harrisburg
Timetable, Chicago time
09:37UA 5831 from Traverse City at the gate
08:27AA 3974 to Harrisburg leaves the gate
22 h 50 apart on the timetable, overnight
AA 3974 leaves 22 h 50 after UA 5831 arrives on the timetable: more than half a day, so not a connection we count.