HH 575 then TK 2748 at Istanbul
Tashkent → Istanbul → Van
Timetable, Istanbul time
22:30HH 575 from Tashkent at the gate
12:15TK 2748 to Van leaves the gate
13 h 45 apart on the timetable, overnight
TK 2748 leaves 13 h 45 after HH 575 arrives on the timetable: more than half a day, so not a connection we count.