AA 5002 then UA 6080 at O'Hare
Cedar Rapids → Chicago → Saginaw
Timetable, Chicago time
15:30AA 5002 from Cedar Rapids at the gate
12:40UA 6080 to Saginaw leaves the gate
21 h 10 apart on the timetable, overnight
UA 6080 leaves 21 h 10 after AA 5002 arrives on the timetable: more than half a day, so not a connection we count.