FR 3977 then IB 5150 at Barcelona
Dublin → Barcelona → Seville
Timetable, Barcelona time
19:05FR 3977 from Dublin at the gate
15:45IB 5150 to Seville leaves the gate
20 h 40 apart on the timetable, overnight
IB 5150 leaves 20 h 40 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.