TK 1933 then BA 127 at Heathrow
Istanbul → London → Doha
Timetable, London time
14:45TK 1933 from Istanbul at the gate
13:45BA 127 to Doha leaves the gate
23 h apart on the timetable, overnight
BA 127 leaves 23 h after TK 1933 arrives on the timetable: more than half a day, so not a connection we count.