AA 5547 then AA 2562 at Charlotte
Savannah → Charlotte → St Louis
Timetable, Charlotte time
10:11AA 5547 from Savannah at the gate
22:51AA 2562 to St Louis leaves the gate
12 h 40 apart on the timetable
AA 2562 leaves 12 h 40 after AA 5547 arrives on the timetable: more than half a day, so not a connection we count.