VY 3603 then QR 3771 at Barcelona
Mahón → Barcelona → Porto
Timetable, Barcelona time
10:15VY 3603 from Mahón at the gatealso QR 3662, LA 5778
18:35QR 3771 to Porto leaves the gatealso IB 5094, LL 5094
8 h 20 apart on the timetable
The last days
VY 3603 and QR 3771 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.