BA 480 then QR 3618 at Barcelona
London Heathrow → Barcelona → Bordeaux
Timetable, Barcelona time
13:40BA 480 from London Heathrow at the gatealso IB 3662, QR 6297, AA 6818, VY 9558
06:25QR 3618 to Bordeaux leaves the gatealso IB 5460, LL 5460, VY 8120
16 h 45 apart on the timetable, overnight
QR 3618 leaves 16 h 45 after BA 480 arrives on the timetable: more than half a day, so not a connection we count.