UA 5210 then AA 6247 at O'Hare
Saginaw → Chicago → Columbus (Ohio)
Timetable, Chicago time
14:15UA 5210 from Saginaw at the gate
10:36AA 6247 to Columbus (Ohio) leaves the gate
20 h 21 apart on the timetable, overnight
AA 6247 leaves 20 h 21 after UA 5210 arrives on the timetable: more than half a day, so not a connection we count.