AA 6332 then UA 6080 at O'Hare
St Louis → Chicago → Saginaw
Timetable, Chicago time
14:56AA 6332 from St Louis at the gate
13:25UA 6080 to Saginaw leaves the gate
22 h 29 apart on the timetable, overnight
UA 6080 leaves 22 h 29 after AA 6332 arrives on the timetable: more than half a day, so not a connection we count.