UA 5210 then AA 4745 at O'Hare
Saginaw → Chicago → Kansas City
Timetable, Chicago time
14:15UA 5210 from Saginaw at the gate
13:24AA 4745 to Kansas City leaves the gate
23 h 09 apart on the timetable, overnight
AA 4745 leaves 23 h 09 after UA 5210 arrives on the timetable: more than half a day, so not a connection we count.