AA 2640 then AA 2562 at Charlotte
Austin → Charlotte → St Louis
Timetable, Charlotte time
21:00AA 2640 from Austin at the gate
20:52AA 2562 to St Louis leaves the gate
23 h 52 apart on the timetable, overnight
AA 2562 leaves 23 h 52 after AA 2640 arrives on the timetable: more than half a day, so not a connection we count.