IB 5423 then VY 1466 at Barcelona
London Heathrow → Barcelona → Bilbao
Timetable, Barcelona time
13:10IB 5423 from London Heathrow at the gatealso LL 5423, VY 7641
12:35VY 1466 to Bilbao leaves the gatealso QR 3523, IB 5166, LL 5166
23 h 25 apart on the timetable, overnight
VY 1466 leaves 23 h 25 after IB 5423 arrives on the timetable: more than half a day, so not a connection we count.