IB 2471 then LA 5788 at Barcelona
Leon → Barcelona → Santander
Timetable, Barcelona time
21:35IB 2471 from Leon at the gatealso LL 3101, VY 5871, QR 6959
16:05LA 5788 to Santander leaves the gate
18 h 30 apart on the timetable, overnight
LA 5788 leaves 18 h 30 after IB 2471 arrives on the timetable: more than half a day, so not a connection we count.