BA 154 then BA 594 at Heathrow
Bridgetown → London → Venezia
Timetable, London time
08:30BA 154 from Bridgetown at the gate
08:05BA 594 to Venezia leaves the gate
23 h 35 apart on the timetable, overnight
BA 594 leaves 23 h 35 after BA 154 arrives on the timetable: more than half a day, so not a connection we count.