DY 531 then BA 773 at Oslo
Stavanger → Oslo → London Heathrow
Timetable, Oslo time
13:10DY 531 from Stavanger at the gate
16:55BA 773 to London Heathrow leaves the gate
3 h 45 apart on the timetable
The last days
DY 531 and BA 773 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.