FR 4438 then AZ 1781 at Fiumicino
Riga → Rome → Palermo
Timetable, Rome time
19:05FR 4438 from Riga at the gate
13:15AZ 1781 to Palermo leaves the gate
18 h 10 apart on the timetable, overnight
AZ 1781 leaves 18 h 10 after FR 4438 arrives on the timetable: more than half a day, so not a connection we count.