OS 780 then OS 471 at Vienna
Sofia → Vienna → Gran Canaria
Timetable, Vienna time
08:35OS 780 from Sofia at the gate
07:25OS 471 to Gran Canaria leaves the gate
22 h 50 apart on the timetable, overnight
OS 471 leaves 22 h 50 after OS 780 arrives on the timetable: more than half a day, so not a connection we count.