IB 5375 then QR 3600 at Barcelona
Firenze → Barcelona → Mahón
Timetable, Barcelona time
16:55IB 5375 from Firenze at the gatealso LL 5375, VY 6075
07:45QR 3600 to Mahón leaves the gatealso VY 3602, IB 5269
14 h 50 apart on the timetable, overnight
QR 3600 leaves 14 h 50 after IB 5375 arrives on the timetable: more than half a day, so not a connection we count.