EC 8065 then LA 5788 at Barcelona
London Gatwick → Barcelona → Santander
Timetable, Barcelona time
18:40EC 8065 from London Gatwick at the gate
16:05LA 5788 to Santander leaves the gate
21 h 25 apart on the timetable, overnight
LA 5788 leaves 21 h 25 after EC 8065 arrives on the timetable: more than half a day, so not a connection we count.