BA 747 then SK 806 at Heathrow
Geneva → London → Oslo
Timetable, London time
21:25BA 747 from Geneva at the gate
15:35SK 806 to Oslo leaves the gate
18 h 10 apart on the timetable, overnight
SK 806 leaves 18 h 10 after BA 747 arrives on the timetable: more than half a day, so not a connection we count.