AA 4615 then AA 9908 at O'Hare
Columbus (Ohio) → Chicago → Nashville
Timetable, Chicago time
05:56AA 4615 from Columbus (Ohio) at the gate
05:45AA 9908 to Nashville leaves the gate
23 h 49 apart on the timetable, overnight
AA 9908 leaves 23 h 49 after AA 4615 arrives on the timetable: more than half a day, so not a connection we count.