AA 1992 then AA 6475 at Charlotte
St Louis → Charlotte → Birmingham (Alabama)
Timetable, Charlotte time
13:14AA 1992 from St Louis at the gate
11:40AA 6475 to Birmingham (Alabama) leaves the gate
22 h 26 apart on the timetable, overnight
AA 6475 leaves 22 h 26 after AA 1992 arrives on the timetable: more than half a day, so not a connection we count.