BA 585 then BA 750 at Heathrow
Milan Linate → London → Geneva
Timetable, London time
21:30BA 585 from Milan Linate at the gate
17:35BA 750 to Geneva leaves the gate
20 h 05 apart on the timetable, overnight
BA 750 leaves 20 h 05 after BA 585 arrives on the timetable: more than half a day, so not a connection we count.