AZ 1778 then FR 1644 at Fiumicino
Palermo → Rome → Vienna
Timetable, Rome time
07:20AZ 1778 from Palermo at the gate
06:25FR 1644 to Vienna leaves the gate
23 h 05 apart on the timetable, overnight
FR 1644 leaves 23 h 05 after AZ 1778 arrives on the timetable: more than half a day, so not a connection we count.