FR 4857 then AZ 1681 at Fiumicino
Catania → Rome → Firenze
Timetable, Rome time
08:55FR 4857 from Catania at the gate
21:50AZ 1681 to Firenze leaves the gate
12 h 55 apart on the timetable
AZ 1681 leaves 12 h 55 after FR 4857 arrives on the timetable: more than half a day, so not a connection we count.