UA 3922 then AA 3664 at O'Hare
Savannah → Chicago → Columbus (Ohio)
Timetable, Chicago time
02:36UA 3922 from Savannah at the gate
15:29AA 3664 to Columbus (Ohio) leaves the gate
12 h 53 apart on the timetable
AA 3664 leaves 12 h 53 after UA 3922 arrives on the timetable: more than half a day, so not a connection we count.