DL 5710 then DL 5626 at Boston
Washington National → Boston → Charlotte
Timetable, Boston time
07:38DL 5710 from Washington National at the gate
06:20DL 5626 to Charlotte leaves the gate
22 h 42 apart on the timetable, overnight
DL 5626 leaves 22 h 42 after DL 5710 arrives on the timetable: more than half a day, so not a connection we count.