AZ 1782 then FR 4437 at Fiumicino
Palermo → Rome → Riga
Timetable, Rome time
11:15AZ 1782 from Palermo at the gate
06:00FR 4437 to Riga leaves the gate
18 h 45 apart on the timetable, overnight
FR 4437 leaves 18 h 45 after AZ 1782 arrives on the timetable: more than half a day, so not a connection we count.