BA 8069 then QR 3683 at Barcelona
London Gatwick → Barcelona → Santander
Timetable, Barcelona time
18:55BA 8069 from London Gatwick at the gate
16:05QR 3683 to Santander leaves the gate
21 h 10 apart on the timetable, overnight
QR 3683 leaves 21 h 10 after BA 8069 arrives on the timetable: more than half a day, so not a connection we count.