XZ 2814 then U2 1684 at Fiumicino
Catania → Rome → Nice
Timetable, Rome time
15:40XZ 2814 from Catania at the gate
09:05U2 1684 to Nice leaves the gate
17 h 25 apart on the timetable, overnight
U2 1684 leaves 17 h 25 after XZ 2814 arrives on the timetable: more than half a day, so not a connection we count.