FR 4903 then VY 3957 at Fiumicino
Palermo → Rome → Bilbao
Timetable, Rome time
21:00FR 4903 from Palermo at the gate
14:30VY 3957 to Bilbao leaves the gate
17 h 30 apart on the timetable, overnight
VY 3957 leaves 17 h 30 after FR 4903 arrives on the timetable: more than half a day, so not a connection we count.