FR 6974 then LA 5768 at Barcelona
Rome → Barcelona → Santander
Timetable, Barcelona time
22:25FR 6974 from Rome at the gate
11:00LA 5768 to Santander leaves the gate
12 h 35 apart on the timetable, overnight
LA 5768 leaves 12 h 35 after FR 6974 arrives on the timetable: more than half a day, so not a connection we count.