W4 6254 then FR 4858 at Fiumicino
Palermo → Rome → Catania
Timetable, Rome time
17:20W4 6254 from Palermo at the gate
05:45FR 4858 to Catania leaves the gate
12 h 25 apart on the timetable, overnight
FR 4858 leaves 12 h 25 after W4 6254 arrives on the timetable: more than half a day, so not a connection we count.