B6 287 then DL 972 at LAX
Boston → Los Angeles → New York JFK
Timetable, Los Angeles time
09:27B6 287 from Boston at the gate
08:25DL 972 to New York JFK leaves the gate
22 h 58 apart on the timetable, overnight
DL 972 leaves 22 h 58 after B6 287 arrives on the timetable: more than half a day, so not a connection we count.