AZ 1754 then FR 6974 at Fiumicino
Catania → Rome → Barcelona
Timetable, Rome time
17:55AZ 1754 from Catania at the gate
08:35FR 6974 to Barcelona leaves the gate
14 h 40 apart on the timetable, overnight
FR 6974 leaves 14 h 40 after AZ 1754 arrives on the timetable: more than half a day, so not a connection we count.