IB 5941 then FR 12 at Barcelona
Nice → Barcelona → Vienna
Timetable, Barcelona time
23:05IB 5941 from Nice at the gatealso VY 8137
15:00FR 12 to Vienna leaves the gate
15 h 55 apart on the timetable, overnight
FR 12 leaves 15 h 55 after IB 5941 arrives on the timetable: more than half a day, so not a connection we count.