QR 3579 then A3 711 at Barcelona
Seville → Barcelona → Athens
Timetable, Barcelona time
15:50QR 3579 from Seville at the gate
11:20A3 711 to Athens leaves the gate
19 h 30 apart on the timetable, overnight
A3 711 leaves 19 h 30 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.