BA 541 then BA 584 at Heathrow
Bologna → London → Milan Linate
Timetable, London time
14:30BA 541 from Bologna at the gate
13:15BA 584 to Milan Linate leaves the gate
22 h 45 apart on the timetable, overnight
BA 584 leaves 22 h 45 after BA 541 arrives on the timetable: more than half a day, so not a connection we count.