AY 1333 then BA 990 at Heathrow
Helsinki → London → Berlin
Timetable, London time
12:35AY 1333 from Helsinki at the gate
17:05BA 990 to Berlin leaves the gate
4 h 30 apart on the timetable
The last days
AY 1333 and BA 990 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.