AA 3243 then DL 5665 at Boston
Washington National → Boston → Richmond
Timetable, Boston time
16:40AA 3243 from Washington National at the gate
15:35DL 5665 to Richmond leaves the gate
22 h 55 apart on the timetable, overnight
DL 5665 leaves 22 h 55 after AA 3243 arrives on the timetable: more than half a day, so not a connection we count.