OS 694 then OS 1159 at Vienna
Bucharest → Vienna → Tirana
Timetable, Vienna time
14:00OS 694 from Bucharest at the gate
05:45OS 1159 to Tirana leaves the gate
15 h 45 apart on the timetable, overnight
OS 1159 leaves 15 h 45 after OS 694 arrives on the timetable: more than half a day, so not a connection we count.