DL 5653 then B6 2255 at Boston
Columbus (Ohio) → Boston → Washington National
Timetable, Boston time
19:42DL 5653 from Columbus (Ohio) at the gate
18:20B6 2255 to Washington National leaves the gate
22 h 38 apart on the timetable, overnight
B6 2255 leaves 22 h 38 after DL 5653 arrives on the timetable: more than half a day, so not a connection we count.