BA 711 then BA 986 at Heathrow
Zurich → London → Berlin
Timetable, London time
12:05BA 711 from Zurich at the gate
15:00BA 986 to Berlin leaves the gate
2 h 55 apart on the timetable
The last days
BA 711 and BA 986 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.