FR 9481 then OS 547 at Vienna
Cologne → Vienna → Venezia
Timetable, Vienna time
22:10FR 9481 from Cologne at the gate
17:30OS 547 to Venezia leaves the gate
19 h 20 apart on the timetable, overnight
OS 547 leaves 19 h 20 after FR 9481 arrives on the timetable: more than half a day, so not a connection we count.