BA 1365 then BA 892 at Heathrow
Manchester → London → Sofia
Timetable, London time
13:10BA 1365 from Manchester at the gate
11:10BA 892 to Sofia leaves the gate
22 h apart on the timetable, overnight
BA 892 leaves 22 h after BA 1365 arrives on the timetable: more than half a day, so not a connection we count.