QR 3617 then FR 12 at Barcelona
Nantes → Barcelona → Vienna
Timetable, Barcelona time
14:25QR 3617 from Nantes at the gatealso IB 5481, VY 8141
10:55FR 12 to Vienna leaves the gate
20 h 30 apart on the timetable, overnight
FR 12 leaves 20 h 30 after QR 3617 arrives on the timetable: more than half a day, so not a connection we count.