QR 3760 then BA 479 at Barcelona
Ranon → Barcelona → London Heathrow
Timetable, Barcelona time
18:35QR 3760 from Ranon at the gate
13:35BA 479 to London Heathrow leaves the gate
19 h apart on the timetable, overnight
BA 479 leaves 19 h after QR 3760 arrives on the timetable: more than half a day, so not a connection we count.