LL 5270 then BA 479 at Barcelona
Mahón → Barcelona → London Heathrow
Timetable, Barcelona time
10:15LL 5270 from Mahón at the gate
13:35BA 479 to London Heathrow leaves the gate
3 h 20 apart on the timetable
The last days
LL 5270 and BA 479 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.