QR 3774 then IB 5374 at Barcelona
Torino → Barcelona → Firenze
Timetable, Barcelona time
16:25QR 3774 from Torino at the gatealso IB 5811, LL 5811, VY 6129
12:45IB 5374 to Firenze leaves the gatealso LL 5374, VY 6074
20 h 20 apart on the timetable, overnight
IB 5374 leaves 20 h 20 after QR 3774 arrives on the timetable: more than half a day, so not a connection we count.