BA 674 then KM 785 at Istanbul
London Heathrow → Istanbul → Valletta
Timetable, Istanbul time
17:10BA 674 from London Heathrow at the gate
11:35KM 785 to Valletta leaves the gate
18 h 25 apart on the timetable, overnight
KM 785 leaves 18 h 25 after BA 674 arrives on the timetable: more than half a day, so not a connection we count.