IB 1458 then BT 5146 at Madrid
Trieste → Madrid → Bilbao
Timetable, Madrid time
17:05IB 1458 from Trieste at the gate
19:45BT 5146 to Bilbao leaves the gate
2 h 40 apart on the timetable
The last days
IB 1458 and BT 5146 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.