AA 1537 then AA 2813 at Charlotte
Washington National → Charlotte → Boston
Timetable, Charlotte time
19:05AA 1537 from Washington National at the gate
18:40AA 2813 to Boston leaves the gate
23 h 35 apart on the timetable, overnight
AA 2813 leaves 23 h 35 after AA 1537 arrives on the timetable: more than half a day, so not a connection we count.