BA 108 then BA 600 at Heathrow
Dubai → London → Venezia
Timetable, London time
17:20BA 108 from Dubai at the gate
17:00BA 600 to Venezia leaves the gate
23 h 40 apart on the timetable, overnight
BA 600 leaves 23 h 40 after BA 108 arrives on the timetable: more than half a day, so not a connection we count.