IB 1086 then IB 1063 at Madrid
Valencia → Madrid → Santander
Timetable, Madrid time
08:05IB 1086 from Valencia at the gatealso CX 1911, QR 6899
15:50IB 1063 to Santander leaves the gatealso LA 1733, AT 5443, VY 5615, QR 6556, BA 7219
7 h 45 apart on the timetable
The last days
IB 1086 and IB 1063 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.