FR 6921 then LL 5026 at Barcelona
Dublin → Barcelona → Brussels
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
19:00LL 5026 to Brussels leaves the gate
21 h 20 apart on the timetable, overnight
LL 5026 leaves 21 h 20 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.