FR 3109 then FR 3976 at Barcelona
Luxembourg → Barcelona → Dublin
Timetable, Barcelona time
11:00FR 3109 from Luxembourg at the gate
06:40FR 3976 to Dublin leaves the gate
19 h 40 apart on the timetable, overnight
FR 3976 leaves 19 h 40 after FR 3109 arrives on the timetable: more than half a day, so not a connection we count.