DL 1798 then DL 508 at Boston
Kansas City → Boston → Los Angeles
Timetable, Boston time
17:05DL 1798 from Kansas City at the gate
16:15DL 508 to Los Angeles leaves the gate
23 h 10 apart on the timetable, overnight
DL 508 leaves 23 h 10 after DL 1798 arrives on the timetable: more than half a day, so not a connection we count.