BA 747 then BA 1456 at Heathrow
Geneva → London → Edinburgh
Timetable, London time
21:25BA 747 from Geneva at the gate
16:55BA 1456 to Edinburgh leaves the gate
19 h 30 apart on the timetable, overnight
BA 1456 leaves 19 h 30 after BA 747 arrives on the timetable: more than half a day, so not a connection we count.