DL 499 then DL 508 at Boston
Denver → Boston → Los Angeles
Timetable, Boston time
17:37DL 499 from Denver at the gate
16:20DL 508 to Los Angeles leaves the gate
22 h 43 apart on the timetable, overnight
DL 508 leaves 22 h 43 after DL 499 arrives on the timetable: more than half a day, so not a connection we count.