FR 12 then OS 143 at Vienna
Barcelona → Vienna → Zurich
Timetable, Vienna time
22:50FR 12 from Barcelona at the gate
17:10OS 143 to Zurich leaves the gate
18 h 20 apart on the timetable, overnight
OS 143 leaves 18 h 20 after FR 12 arrives on the timetable: more than half a day, so not a connection we count.