FR 776 then BA 8072 at Barcelona
Venezia → Barcelona → London Gatwick
Timetable, Barcelona time
17:40FR 776 from Venezia at the gate
14:55BA 8072 to London Gatwick leaves the gate
21 h 15 apart on the timetable, overnight
BA 8072 leaves 21 h 15 after FR 776 arrives on the timetable: more than half a day, so not a connection we count.