BA 480 then QR 3650 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
11:35QR 3650 to Basel leaves the gate
21 h 50 apart on the timetable, overnight
QR 3650 leaves 21 h 50 after BA 480 arrives on the timetable: more than half a day, so not a connection we count.