B6 618 then DL 5665 at Boston
New York JFK → Boston → Richmond
Timetable, Boston time
16:59B6 618 from New York JFK at the gate
15:20DL 5665 to Richmond leaves the gate
22 h 21 apart on the timetable, overnight
DL 5665 leaves 22 h 21 after B6 618 arrives on the timetable: more than half a day, so not a connection we count.