AA 5198 then AA 3368 at Charlotte
Nashville → Charlotte → Key West
Timetable, Charlotte time
17:40AA 5198 from Nashville at the gate
16:25AA 3368 to Key West leaves the gate
22 h 45 apart on the timetable, overnight
AA 3368 leaves 22 h 45 after AA 5198 arrives on the timetable: more than half a day, so not a connection we count.