QR 3692 then IB 5374 at Barcelona
Lyon → Barcelona → Firenze
Timetable, Barcelona time
22:45QR 3692 from Lyon at the gate
15:40IB 5374 to Firenze leaves the gatealso LL 5374, VY 6074
16 h 55 apart on the timetable, overnight
IB 5374 leaves 16 h 55 after QR 3692 arrives on the timetable: more than half a day, so not a connection we count.