UA 6239 then AA 2276 at Charlotte
Washington → Charlotte → Orlando
Timetable, Charlotte time
14:22UA 6239 from Washington at the gate
10:20AA 2276 to Orlando leaves the gate
19 h 58 apart on the timetable, overnight
AA 2276 leaves 19 h 58 after UA 6239 arrives on the timetable: more than half a day, so not a connection we count.