FR 4596 then IB 5130 at Barcelona
Porto → Barcelona → Alicante
Timetable, Barcelona time
14:30FR 4596 from Porto at the gate
11:25IB 5130 to Alicante leaves the gatealso LA 5750
20 h 55 apart on the timetable, overnight
IB 5130 leaves 20 h 55 after FR 4596 arrives on the timetable: more than half a day, so not a connection we count.