UA 5210 then AA 4112 at O'Hare
Saginaw → Chicago → Columbia Metropolitan
Timetable, Chicago time
14:15UA 5210 from Saginaw at the gate
13:10AA 4112 to Columbia Metropolitan leaves the gate
22 h 55 apart on the timetable, overnight
AA 4112 leaves 22 h 55 after UA 5210 arrives on the timetable: more than half a day, so not a connection we count.