QR 3579 then IB 5142 at Barcelona
Santiago de Compostela → Barcelona → Alicante
Timetable, Barcelona time
08:25QR 3579 from Santiago de Compostela at the gate
21:40IB 5142 to Alicante leaves the gate
13 h 15 apart on the timetable
IB 5142 leaves 13 h 15 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.