OS 604 then FR 802 at Vienna
Zagreb → Vienna → Valencia
Timetable, Vienna time
11:55OS 604 from Zagreb at the gate
06:20FR 802 to Valencia leaves the gate
18 h 25 apart on the timetable, overnight
FR 802 leaves 18 h 25 after OS 604 arrives on the timetable: more than half a day, so not a connection we count.