SQ 387 then BA 8068 at Barcelona
Madrid → Barcelona → London Gatwick
Timetable, Barcelona time
11:15SQ 387 from Madrid at the gate
13:55BA 8068 to London Gatwick leaves the gate
2 h 40 apart on the timetable
The last days
SQ 387 and BA 8068 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.