FR 8561 then FR 4861 at Fiumicino
Valletta → Rome → Catania
Timetable, Rome time
15:15FR 8561 from Valletta at the gate
12:50FR 4861 to Catania leaves the gate
21 h 35 apart on the timetable, overnight
FR 4861 leaves 21 h 35 after FR 8561 arrives on the timetable: more than half a day, so not a connection we count.