FR 4586 then LA 5761 at Barcelona
Porto → Barcelona → Culleredo
Timetable, Barcelona time
21:10FR 4586 from Porto at the gate
15:30LA 5761 to Culleredo leaves the gate
18 h 20 apart on the timetable, overnight
LA 5761 leaves 18 h 20 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.