FR 1815 then XZ 2813 at Fiumicino
Porto → Rome → Catania
Timetable, Rome time
20:40FR 1815 from Porto at the gate
13:30XZ 2813 to Catania leaves the gate
16 h 50 apart on the timetable, overnight
XZ 2813 leaves 16 h 50 after FR 1815 arrives on the timetable: more than half a day, so not a connection we count.