IB 5405 then FI 6405 at Barcelona
London Gatwick → Barcelona → Lisbon
Timetable, Barcelona time
16:55IB 5405 from London Gatwick at the gatealso LL 5405, VY 7609, BA 8063
14:35FI 6405 to Lisbon leaves the gatealso S4 8947
21 h 40 apart on the timetable, overnight
FI 6405 leaves 21 h 40 after IB 5405 arrives on the timetable: more than half a day, so not a connection we count.