IB 2251 then BA 483 at Barcelona
Melilla → Barcelona → London Heathrow
Timetable, Barcelona time
12:30IB 2251 from Melilla at the gatealso LL 3103
18:10BA 483 to London Heathrow leaves the gate
5 h 40 apart on the timetable
The last days
IB 2251 and BA 483 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.