SK 525 then BA 594 at Heathrow
Stockholm → London → Venezia
Timetable, London time
08:55SK 525 from Stockholm at the gate
08:05BA 594 to Venezia leaves the gate
23 h 10 apart on the timetable, overnight
BA 594 leaves 23 h 10 after SK 525 arrives on the timetable: more than half a day, so not a connection we count.