BA 593 then BA 574 at Heathrow
Venezia → London → Milan Linate
Timetable, London time
14:50BA 593 from Venezia at the gate
14:40BA 574 to Milan Linate leaves the gate
23 h 50 apart on the timetable, overnight
BA 574 leaves 23 h 50 after BA 593 arrives on the timetable: more than half a day, so not a connection we count.