IB 5375 then QR 3624 at Barcelona
Firenze → Barcelona → Bordeaux
Timetable, Barcelona time
16:55IB 5375 from Firenze at the gatealso LL 5375, VY 6075
16:40QR 3624 to Bordeaux leaves the gatealso IB 5462, LL 5462, LA 5754, VY 8122
23 h 45 apart on the timetable, overnight
QR 3624 leaves 23 h 45 after IB 5375 arrives on the timetable: more than half a day, so not a connection we count.