BA 961 then BA 438 at Heathrow
Hamburg → London → Amsterdam
Timetable, London time
12:20BA 961 from Hamburg at the gate
11:50BA 438 to Amsterdam leaves the gate
23 h 30 apart on the timetable, overnight
BA 438 leaves 23 h 30 after BA 961 arrives on the timetable: more than half a day, so not a connection we count.