BA 8065 then IB 2470 at Barcelona
London Gatwick → Barcelona → Leon
Timetable, Barcelona time
17:40BA 8065 from London Gatwick at the gate
17:00IB 2470 to Leon leaves the gatealso LL 3100, VY 5870, QR 8047
23 h 20 apart on the timetable, overnight
IB 2470 leaves 23 h 20 after BA 8065 arrives on the timetable: more than half a day, so not a connection we count.