IB 0 then I2 1525 at Madrid
Santander → Madrid → Fuerteventura
Timetable, Madrid time
09:20IB 0 from Santander at the gate
16:20I2 1525 to Fuerteventura leaves the gatealso IB 1525
7 h apart on the timetable
The last days
IB 0 and I2 1525 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.