FR 6921 then IB 5096 at Barcelona
Dublin → Barcelona → Porto
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
20:25IB 5096 to Porto leaves the gate
22 h 45 apart on the timetable, overnight
IB 5096 leaves 22 h 45 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.