TK 253 then HH 576 at Istanbul
Hanoi → Istanbul → Tashkent
Timetable, Istanbul time
15:35TK 253 from Hanoi at the gate
10:00HH 576 to Tashkent leaves the gate
18 h 25 apart on the timetable, overnight
HH 576 leaves 18 h 25 after TK 253 arrives on the timetable: more than half a day, so not a connection we count.