AA 3446 then AA 73 at O'Hare
Columbus (Ohio) → Chicago → Buffalo
Timetable, Chicago time
07:29AA 3446 from Columbus (Ohio) at the gate
07:00AA 73 to Buffalo leaves the gate
23 h 31 apart on the timetable, overnight
AA 73 leaves 23 h 31 after AA 3446 arrives on the timetable: more than half a day, so not a connection we count.