UA 3908 then AA 6455 at O'Hare
Columbus (Ohio) → Chicago → Marion
Timetable, Chicago time
09:34UA 3908 from Columbus (Ohio) at the gate
23:00AA 6455 to Marion leaves the gate
13 h 26 apart on the timetable
AA 6455 leaves 13 h 26 after UA 3908 arrives on the timetable: more than half a day, so not a connection we count.