FR 6921 then LA 5756 at Barcelona
Dublin → Barcelona → Copenhagen
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
17:00LA 5756 to Copenhagen leaves the gate
19 h 20 apart on the timetable, overnight
LA 5756 leaves 19 h 20 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.