IB 5401 then VY 1466 at Barcelona
London Gatwick → Barcelona → Bilbao
Timetable, Barcelona time
13:00IB 5401 from London Gatwick at the gatealso LL 5401, VY 7605, BA 8059
12:20VY 1466 to Bilbao leaves the gatealso QR 3523, IB 5166, LL 5166
23 h 20 apart on the timetable, overnight
VY 1466 leaves 23 h 20 after IB 5401 arrives on the timetable: more than half a day, so not a connection we count.