FR 6921 then LA 5794 at Barcelona
Dublin → Barcelona → Vigo
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
20:15LA 5794 to Vigo leaves the gate
22 h 35 apart on the timetable, overnight
LA 5794 leaves 22 h 35 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.