BA 911 then BA 580 at Heathrow
Frankfurt am Main → London → Milan
Timetable, London time
08:25BA 911 from Frankfurt am Main at the gate
08:15BA 580 to Milan leaves the gate
23 h 50 apart on the timetable, overnight
BA 580 leaves 23 h 50 after BA 911 arrives on the timetable: more than half a day, so not a connection we count.