BA 601 then BA 962 at Heathrow
Venezia → London → Hamburg
Timetable, London time
08:15BA 601 from Venezia at the gate
06:45BA 962 to Hamburg leaves the gate
22 h 30 apart on the timetable, overnight
BA 962 leaves 22 h 30 after BA 601 arrives on the timetable: more than half a day, so not a connection we count.