B6 2220 then DL 5595 at JFK
London Heathrow → New York → Washington
Timetable, New York time
11:14B6 2220 from London Heathrow at the gate
10:25DL 5595 to Washington leaves the gate
23 h 11 apart on the timetable, overnight
DL 5595 leaves 23 h 11 after B6 2220 arrives on the timetable: more than half a day, so not a connection we count.