OS 780 then FR 802 at Vienna
Sofia → Vienna → Valencia
Timetable, Vienna time
08:35OS 780 from Sofia at the gate
06:15FR 802 to Valencia leaves the gate
21 h 40 apart on the timetable, overnight
FR 802 leaves 21 h 40 after OS 780 arrives on the timetable: more than half a day, so not a connection we count.