AA 3939 then AA 5943 at Charlotte
Key West → Charlotte → Roanoke
Timetable, Charlotte time
21:44AA 3939 from Key West at the gate
21:35AA 5943 to Roanoke leaves the gate
23 h 51 apart on the timetable, overnight
AA 5943 leaves 23 h 51 after AA 3939 arrives on the timetable: more than half a day, so not a connection we count.