BA 893 then BA 33 at Heathrow
Sofia → London → Kuala Lumpur
Timetable, London time
21:50BA 893 from Sofia at the gate
21:10BA 33 to Kuala Lumpur leaves the gate
23 h 20 apart on the timetable, overnight
BA 33 leaves 23 h 20 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.