AA 2640 then AA 1502 at Charlotte
Austin → Charlotte → Nashville
Timetable, Charlotte time
20:52AA 2640 from Austin at the gate
19:50AA 1502 to Nashville leaves the gate
22 h 58 apart on the timetable, overnight
AA 1502 leaves 22 h 58 after AA 2640 arrives on the timetable: more than half a day, so not a connection we count.