OS 550 then OS 1159 at Vienna
Venezia → Vienna → Tirana
Timetable, Vienna time
07:55OS 550 from Venezia at the gate
05:45OS 1159 to Tirana leaves the gate
21 h 50 apart on the timetable, overnight
OS 1159 leaves 21 h 50 after OS 550 arrives on the timetable: more than half a day, so not a connection we count.