BA 679 then LA 8085 at Heathrow
Istanbul → London → São Paulo
Timetable, London time
22:35BA 679 from Istanbul at the gate
20:15LA 8085 to São Paulo leaves the gate
21 h 40 apart on the timetable, overnight
LA 8085 leaves 21 h 40 after BA 679 arrives on the timetable: more than half a day, so not a connection we count.