BA 993 then BA 752 at Heathrow
Berlin → London → Geneva
Timetable, London time
07:40BA 993 from Berlin at the gate
20:20BA 752 to Geneva leaves the gate
12 h 40 apart on the timetable
BA 752 leaves 12 h 40 after BA 993 arrives on the timetable: more than half a day, so not a connection we count.