DL 657 then DL 508 at Boston
Salt Lake City → Boston → Los Angeles
Timetable, Boston time
16:38DL 657 from Salt Lake City at the gate
16:20DL 508 to Los Angeles leaves the gate
23 h 42 apart on the timetable, overnight
DL 508 leaves 23 h 42 after DL 657 arrives on the timetable: more than half a day, so not a connection we count.