IB 2471 then IB 5484 at Barcelona
Leon → Barcelona → Istanbul
Timetable, Barcelona time
20:25IB 2471 from Leon at the gatealso LL 3101, VY 5871, QR 6959
17:05IB 5484 to Istanbul leaves the gatealso LL 5484, VY 8612
20 h 40 apart on the timetable, overnight
IB 5484 leaves 20 h 40 after IB 2471 arrives on the timetable: more than half a day, so not a connection we count.