W4 6186 then W4 6155 at Fiumicino
Bilbao → Rome → Bacau
Timetable, Rome time
15:10W4 6186 from Bilbao at the gate
05:40W4 6155 to Bacau leaves the gate
14 h 30 apart on the timetable, overnight
W4 6155 leaves 14 h 30 after W4 6186 arrives on the timetable: more than half a day, so not a connection we count.