BA 678 then T5 916 at Istanbul
London Heathrow → Istanbul → Ashgabat
Timetable, Istanbul time
17:30BA 678 from London Heathrow at the gate
07:20T5 916 to Ashgabat leaves the gate
13 h 50 apart on the timetable, overnight
T5 916 leaves 13 h 50 after BA 678 arrives on the timetable: more than half a day, so not a connection we count.