FR 44 then OS 549 at Vienna
Athens → Vienna → Venezia
Timetable, Vienna time
07:25FR 44 from Athens at the gate
21:10OS 549 to Venezia leaves the gate
13 h 45 apart on the timetable
OS 549 leaves 13 h 45 after FR 44 arrives on the timetable: more than half a day, so not a connection we count.