VY 4237 then QR 3771 at Barcelona
Düsseldorf → Barcelona → Basel
Timetable, Barcelona time
11:45VY 4237 from Düsseldorf at the gate
08:45QR 3771 to Basel leaves the gate
21 h apart on the timetable, overnight
QR 3771 leaves 21 h after VY 4237 arrives on the timetable: more than half a day, so not a connection we count.