FR 3977 then VY 1472 at Barcelona
Dublin → Barcelona → Bilbao
Timetable, Barcelona time
21:10FR 3977 from Dublin at the gate
15:35VY 1472 to Bilbao leaves the gatealso IB 5172, LL 5172
18 h 25 apart on the timetable, overnight
VY 1472 leaves 18 h 25 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.