BA 893 then EK 4 at Heathrow
Sofia → London → Dubai
Timetable, London time
21:50BA 893 from Sofia at the gate
20:20EK 4 to Dubai leaves the gate
22 h 30 apart on the timetable, overnight
EK 4 leaves 22 h 30 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.