EI 5791 then IB 1167 at Madrid
Dublin → Madrid → Bilbao
Timetable, Madrid time
13:50EI 5791 from Dublin at the gate
17:45IB 1167 to Bilbao leaves the gatealso BT 5155, VY 5386, AV 6198, AA 8797
3 h 55 apart on the timetable
The last days
EI 5791 and IB 1167 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.