LG 3591 then FR 6874 at Barcelona
Luxembourg → Barcelona → Dublin
Timetable, Barcelona time
15:30LG 3591 from Luxembourg at the gate
10:45FR 6874 to Dublin leaves the gate
19 h 15 apart on the timetable, overnight
FR 6874 leaves 19 h 15 after LG 3591 arrives on the timetable: more than half a day, so not a connection we count.