AA 5021 then B6 1148 at Charlotte
St Louis → Charlotte → Fort Lauderdale
Timetable, Charlotte time
19:29AA 5021 from St Louis at the gate
15:10B6 1148 to Fort Lauderdale leaves the gate
19 h 41 apart on the timetable, overnight
B6 1148 leaves 19 h 41 after AA 5021 arrives on the timetable: more than half a day, so not a connection we count.