QR 3579 then EW 7521 at Barcelona
Seville → Barcelona → Hamburg
Timetable, Barcelona time
15:50QR 3579 from Seville at the gate
09:20EW 7521 to Hamburg leaves the gate
17 h 30 apart on the timetable, overnight
EW 7521 leaves 17 h 30 after QR 3579 arrives on the timetable: more than half a day, so not a connection we count.