UA 6239 then AA 1879 at Charlotte
Washington → Charlotte → Orlando
Timetable, Charlotte time
14:22UA 6239 from Washington at the gate
14:13AA 1879 to Orlando leaves the gate
23 h 51 apart on the timetable, overnight
AA 1879 leaves 23 h 51 after UA 6239 arrives on the timetable: more than half a day, so not a connection we count.