FR 866 then IB 5420 at Barcelona
Venezia → Barcelona → London Gatwick
Timetable, Barcelona time
22:15FR 866 from Venezia at the gate
18:10IB 5420 to London Gatwick leaves the gatealso LL 5420, VY 7624, BA 8078
19 h 55 apart on the timetable, overnight
IB 5420 leaves 19 h 55 after FR 866 arrives on the timetable: more than half a day, so not a connection we count.