FR 776 then IB 5414 at Barcelona
Venezia → Barcelona → London Gatwick
Timetable, Barcelona time
15:35FR 776 from Venezia at the gate
14:55IB 5414 to London Gatwick leaves the gatealso LL 5414, VY 7618
23 h 20 apart on the timetable, overnight
IB 5414 leaves 23 h 20 after FR 776 arrives on the timetable: more than half a day, so not a connection we count.