BA 893 then BA 448 at Heathrow
Sofia → London → Amsterdam
Timetable, London time
21:50BA 893 from Sofia at the gate
19:35BA 448 to Amsterdam leaves the gate
21 h 45 apart on the timetable, overnight
BA 448 leaves 21 h 45 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.