AA 5316 then UA 6080 at O'Hare
Louisville → Chicago → Saginaw
Timetable, Chicago time
14:15AA 5316 from Louisville at the gate
13:25UA 6080 to Saginaw leaves the gate
23 h 10 apart on the timetable, overnight
UA 6080 leaves 23 h 10 after AA 5316 arrives on the timetable: more than half a day, so not a connection we count.