BA 893 then BA 956 at Heathrow
Sofia → London → Munich
Timetable, London time
21:10BA 893 from Sofia at the gate
20:00BA 956 to Munich leaves the gate
22 h 50 apart on the timetable, overnight
BA 956 leaves 22 h 50 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.