FR 4586 then IB 5142 at Barcelona
Porto → Barcelona → Alicante
Timetable, Barcelona time
09:20FR 4586 from Porto at the gate
21:40IB 5142 to Alicante leaves the gate
12 h 20 apart on the timetable
IB 5142 leaves 12 h 20 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.