AZ 79 then U2 1684 at Fiumicino
Barcelona → Rome → Nice
Timetable, Rome time
18:35AZ 79 from Barcelona at the gate
11:35U2 1684 to Nice leaves the gate
17 h apart on the timetable, overnight
U2 1684 leaves 17 h after AZ 79 arrives on the timetable: more than half a day, so not a connection we count.