BA 480 then QR 3771 at Barcelona
London Heathrow → Barcelona → Basel
Timetable, Barcelona time
13:45BA 480 from London Heathrow at the gatealso IB 3662, QR 6297, AA 6818, VY 9558
08:45QR 3771 to Basel leaves the gate
19 h apart on the timetable, overnight
QR 3771 leaves 19 h after BA 480 arrives on the timetable: more than half a day, so not a connection we count.