BA 819 then BA 592 at Heathrow
Copenhagen → London → Venezia
Timetable, London time
08:10BA 819 from Copenhagen at the gate
07:55BA 592 to Venezia leaves the gate
23 h 45 apart on the timetable, overnight
BA 592 leaves 23 h 45 after BA 819 arrives on the timetable: more than half a day, so not a connection we count.