FR 4903 then W4 6185 at Fiumicino
Palermo → Rome → Bilbao
Timetable, Rome time
18:10FR 4903 from Palermo at the gate
09:45W4 6185 to Bilbao leaves the gate
15 h 35 apart on the timetable, overnight
W4 6185 leaves 15 h 35 after FR 4903 arrives on the timetable: more than half a day, so not a connection we count.