KM 784 then TK 1971 at Istanbul
Valletta → Istanbul → London Heathrow
Timetable, Istanbul time
21:45KM 784 from Valletta at the gate
15:25TK 1971 to London Heathrow leaves the gate
17 h 40 apart on the timetable, overnight
TK 1971 leaves 17 h 40 after KM 784 arrives on the timetable: more than half a day, so not a connection we count.