FR 3977 then IB 5136 at Barcelona
Dublin → Barcelona → Alicante
Timetable, Barcelona time
22:55FR 3977 from Dublin at the gate
15:25IB 5136 to Alicante leaves the gate
16 h 30 apart on the timetable, overnight
IB 5136 leaves 16 h 30 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.