FR 803 then FR 9753 at Vienna
Valencia → Vienna → Banja Luka
Timetable, Vienna time
21:45FR 803 from Valencia at the gate
12:10FR 9753 to Banja Luka leaves the gate
14 h 25 apart on the timetable, overnight
FR 9753 leaves 14 h 25 after FR 803 arrives on the timetable: more than half a day, so not a connection we count.