SV 209 then FR 4858 at Fiumicino
Riyadh → Rome → Catania
Timetable, Rome time
06:15SV 209 from Riyadh at the gate
05:45FR 4858 to Catania leaves the gate
23 h 30 apart on the timetable, overnight
FR 4858 leaves 23 h 30 after SV 209 arrives on the timetable: more than half a day, so not a connection we count.