UA 5210 then AA 3490 at O'Hare
Saginaw → Chicago → Grand Rapids
Timetable, Chicago time
14:15UA 5210 from Saginaw at the gate
13:40AA 3490 to Grand Rapids leaves the gate
23 h 25 apart on the timetable, overnight
AA 3490 leaves 23 h 25 after UA 5210 arrives on the timetable: more than half a day, so not a connection we count.