BA 893 then LX 357 at Heathrow
Sofia → London → Geneva
Timetable, London time
21:50BA 893 from Sofia at the gate
19:30LX 357 to Geneva leaves the gate
21 h 40 apart on the timetable, overnight
LX 357 leaves 21 h 40 after BA 893 arrives on the timetable: more than half a day, so not a connection we count.