IB 5403 then VY 1310 at Barcelona
London Gatwick → Barcelona → Alicante
Timetable, Barcelona time
16:10IB 5403 from London Gatwick at the gatealso LL 5403, VY 7607, BA 8061
15:25VY 1310 to Alicante leaves the gatealso QR 3517, IB 5136, LL 5136
23 h 15 apart on the timetable, overnight
VY 1310 leaves 23 h 15 after IB 5403 arrives on the timetable: more than half a day, so not a connection we count.