BA 577 then BA 872 at Heathrow
Milan Linate → London → Krakow
Timetable, London time
08:35BA 577 from Milan Linate at the gate
06:05BA 872 to Krakow leaves the gate
21 h 30 apart on the timetable, overnight
BA 872 leaves 21 h 30 after BA 577 arrives on the timetable: more than half a day, so not a connection we count.