DL 5653 then DL 571 at Boston
Columbus (Ohio) → Boston → San Diego
Timetable, Boston time
19:42DL 5653 from Columbus (Ohio) at the gate
17:10DL 571 to San Diego leaves the gate
21 h 28 apart on the timetable, overnight
DL 571 leaves 21 h 28 after DL 5653 arrives on the timetable: more than half a day, so not a connection we count.