W4 6028 then U2 1684 at Fiumicino
Valencia → Rome → Nice
Timetable, Rome time
17:40W4 6028 from Valencia at the gate
14:45U2 1684 to Nice leaves the gate
21 h 05 apart on the timetable, overnight
U2 1684 leaves 21 h 05 after W4 6028 arrives on the timetable: more than half a day, so not a connection we count.