IB 423 then FR 3976 at Barcelona
Madrid → Barcelona → Dublin
Timetable, Barcelona time
20:25IB 423 from Madrid at the gatealso IB 423S, LA 1684, LL 3023, OB 5010, VY 5063, AV 6072, QR 6918
19:40FR 3976 to Dublin leaves the gate
23 h 15 apart on the timetable, overnight
FR 3976 leaves 23 h 15 after IB 423 arrives on the timetable: more than half a day, so not a connection we count.