B6 387 then DL 915 at LAX
Boston → Los Angeles → New York JFK
Timetable, Los Angeles time
00:55B6 387 from Boston at the gate
23:59DL 915 to New York JFK leaves the gate
23 h 04 apart on the timetable
DL 915 leaves 23 h 04 after B6 387 arrives on the timetable: more than half a day, so not a connection we count.