OS 694 then FR 1565 at Vienna
Bucharest → Vienna → Catania
Timetable, Vienna time
14:00OS 694 from Bucharest at the gate
05:55FR 1565 to Catania leaves the gate
15 h 55 apart on the timetable, overnight
FR 1565 leaves 15 h 55 after OS 694 arrives on the timetable: more than half a day, so not a connection we count.