VY 3956 then IB 648 at Fiumicino
Bilbao → Rome → Madrid
Timetable, Rome time
13:20VY 3956 from Bilbao at the gate
12:00IB 648 to Madrid leaves the gate
22 h 40 apart on the timetable, overnight
IB 648 leaves 22 h 40 after VY 3956 arrives on the timetable: more than half a day, so not a connection we count.