DL 5653 then B6 1620 at Boston
Columbus (Ohio) → Boston → London
Timetable, Boston time
19:42DL 5653 from Columbus (Ohio) at the gate
19:10B6 1620 to London leaves the gate
23 h 28 apart on the timetable, overnight
B6 1620 leaves 23 h 28 after DL 5653 arrives on the timetable: more than half a day, so not a connection we count.