AA 4307 then UA 6080 at O'Hare
Traverse City → Chicago → Saginaw
Timetable, Chicago time
15:13AA 4307 from Traverse City at the gate
12:40UA 6080 to Saginaw leaves the gate
21 h 27 apart on the timetable, overnight
UA 6080 leaves 21 h 27 after AA 4307 arrives on the timetable: more than half a day, so not a connection we count.