EW 520 then QR 3646 at Barcelona
Cologne → Barcelona → Jerez de la Forntera
Timetable, Barcelona time
16:50EW 520 from Cologne at the gate
10:55QR 3646 to Jerez de la Forntera leaves the gate
18 h 05 apart on the timetable, overnight
QR 3646 leaves 18 h 05 after EW 520 arrives on the timetable: more than half a day, so not a connection we count.