W4 6186 then FR 999 at Fiumicino
Bilbao → Rome → Valencia
Timetable, Rome time
15:10W4 6186 from Bilbao at the gate
10:35FR 999 to Valencia leaves the gate
19 h 25 apart on the timetable, overnight
FR 999 leaves 19 h 25 after W4 6186 arrives on the timetable: more than half a day, so not a connection we count.