IB 5212 then FR 3976 at Barcelona
Santiago de Compostela → Barcelona → Dublin
Timetable, Barcelona time
20:30IB 5212 from Santiago de Compostela at the gate
17:15FR 3976 to Dublin leaves the gate
20 h 45 apart on the timetable, overnight
FR 3976 leaves 20 h 45 after IB 5212 arrives on the timetable: more than half a day, so not a connection we count.