AA 1637 then AA 5843 at Charlotte
Washington → Charlotte → Roanoke
Timetable, Charlotte time
08:38AA 1637 from Washington at the gate
08:30AA 5843 to Roanoke leaves the gate
23 h 52 apart on the timetable, overnight
AA 5843 leaves 23 h 52 after AA 1637 arrives on the timetable: more than half a day, so not a connection we count.