BA 965 then BA 43 at Heathrow
Hamburg → London → Cape Town
Timetable, London time
21:30BA 965 from Hamburg at the gate
18:25BA 43 to Cape Town leaves the gate
20 h 55 apart on the timetable, overnight
BA 43 leaves 20 h 55 after BA 965 arrives on the timetable: more than half a day, so not a connection we count.