TK 1933 then BA 868 at Heathrow
Istanbul → London → Budapest
Timetable, London time
14:45TK 1933 from Istanbul at the gate
14:00BA 868 to Budapest leaves the gate
23 h 15 apart on the timetable, overnight
BA 868 leaves 23 h 15 after TK 1933 arrives on the timetable: more than half a day, so not a connection we count.