EC 3749 then VY 1472 at Barcelona
Milan → Barcelona → Bilbao
Timetable, Barcelona time
09:40EC 3749 from Milan at the gate
15:35VY 1472 to Bilbao leaves the gatealso IB 5172, LL 5172
5 h 55 apart on the timetable
The last days
EC 3749 and VY 1472 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.