DL 5641 then DL 508 at Boston
Cleveland → Boston → Los Angeles
Timetable, Boston time
20:00DL 5641 from Cleveland at the gate
16:20DL 508 to Los Angeles leaves the gate
20 h 20 apart on the timetable, overnight
DL 508 leaves 20 h 20 after DL 5641 arrives on the timetable: more than half a day, so not a connection we count.