GQ 820 then FR 3946 at Fiumicino
Athens → Rome → Palermo
Timetable, Rome time
12:00GQ 820 from Athens at the gate
07:15FR 3946 to Palermo leaves the gate
19 h 15 apart on the timetable, overnight
FR 3946 leaves 19 h 15 after GQ 820 arrives on the timetable: more than half a day, so not a connection we count.