AA 1992 then AA 5815 at Charlotte
St Louis → Charlotte → Jacksonville (North Carolina)
Timetable, Charlotte time
08:00AA 1992 from St Louis at the gate
21:20AA 5815 to Jacksonville (North Carolina) leaves the gate
13 h 20 apart on the timetable
AA 5815 leaves 13 h 20 after AA 1992 arrives on the timetable: more than half a day, so not a connection we count.