DL 797 then DL 452 at Seattle
Boston → Seattle → New York JFK
Timetable, Seattle time
22:55DL 797 from Boston at the gate
22:52DL 452 to New York JFK leaves the gate
23 h 57 apart on the timetable, overnight
DL 452 leaves 23 h 57 after DL 797 arrives on the timetable: more than half a day, so not a connection we count.