QR 3579 then LA 5754 at Barcelona
Seville → Barcelona → Alicante
Timetable, Barcelona time
15:35QR 3579 from Seville at the gate
12:40LA 5754 to Alicante leaves the gate
21 h 05 apart on the timetable, overnight
LA 5754 leaves 21 h 05 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.