IB 2251 then IB 416 at Barcelona
Melilla → Barcelona → Madrid
Timetable, Barcelona time
12:30IB 2251 from Melilla at the gatealso LL 3103
17:00IB 416 to Madrid leaves the gatealso IB 416S, LL 3016, VY 5068, QR 6587, BA 7083, CZ 7325, AA 8732
4 h 30 apart on the timetable
The last days
IB 2251 and IB 416 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.