AA 1637 then AA 2758 at Charlotte
Washington → Charlotte → Memphis
Timetable, Charlotte time
07:38AA 1637 from Washington at the gate
21:00AA 2758 to Memphis leaves the gate
13 h 22 apart on the timetable
AA 2758 leaves 13 h 22 after AA 1637 arrives on the timetable: more than half a day, so not a connection we count.