BA 929 then VS 478 at Heathrow
Hannover → London → Cape Town
Timetable, London time
22:35BA 929 from Hannover at the gate
22:30VS 478 to Cape Town leaves the gate
23 h 55 apart on the timetable, overnight
VS 478 leaves 23 h 55 after BA 929 arrives on the timetable: more than half a day, so not a connection we count.