BA 176 then BA 962 at Heathrow
New York JFK → London → Hamburg
Timetable, London time
07:05BA 176 from New York JFK at the gate
06:45BA 962 to Hamburg leaves the gate
23 h 40 apart on the timetable, overnight
BA 962 leaves 23 h 40 after BA 176 arrives on the timetable: more than half a day, so not a connection we count.