QR 3674 then FR 12 at Barcelona
Firenze → Barcelona → Vienna
Timetable, Barcelona time
11:35QR 3674 from Firenze at the gatealso LL 5371, VY 6071
10:55FR 12 to Vienna leaves the gate
23 h 20 apart on the timetable, overnight
FR 12 leaves 23 h 20 after QR 3674 arrives on the timetable: more than half a day, so not a connection we count.