B6 2718 then DL 675 at Boston
New York JFK → Boston → Kansas City
Timetable, Boston time
07:50B6 2718 from New York JFK at the gate
06:15DL 675 to Kansas City leaves the gate
22 h 25 apart on the timetable, overnight
DL 675 leaves 22 h 25 after B6 2718 arrives on the timetable: more than half a day, so not a connection we count.