OS 553 then FR 8560 at Fiumicino
Vienna → Rome → Valletta
Timetable, Rome time
14:15OS 553 from Vienna at the gate
13:40FR 8560 to Valletta leaves the gate
23 h 25 apart on the timetable, overnight
FR 8560 leaves 23 h 25 after OS 553 arrives on the timetable: more than half a day, so not a connection we count.