AA 3128 then UA 6080 at O'Hare
New York LaGuardia → Chicago → Saginaw
Timetable, Chicago time
16:05AA 3128 from New York LaGuardia at the gate
13:25UA 6080 to Saginaw leaves the gate
21 h 20 apart on the timetable, overnight
UA 6080 leaves 21 h 20 after AA 3128 arrives on the timetable: more than half a day, so not a connection we count.