AA 1831 then AA 6019 at Charlotte
Key West → Charlotte → Mobile
Timetable, Charlotte time
16:14AA 1831 from Key West at the gate
15:45AA 6019 to Mobile leaves the gate
23 h 31 apart on the timetable, overnight
AA 6019 leaves 23 h 31 after AA 1831 arrives on the timetable: more than half a day, so not a connection we count.