I2 1572 then BT 5146 at Madrid
Tenerife North → Madrid → Bilbao
Timetable, Madrid time
18:20I2 1572 from Tenerife North at the gatealso IB 1572, VY 5039
19:45BT 5146 to Bilbao leaves the gate
1 h 25 apart on the timetable
The last days
I2 1572 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.