HH 575 then TK 1075 at Istanbul
Tashkent → Istanbul → Varna
Timetable, Istanbul time
22:30HH 575 from Tashkent at the gate
21:00TK 1075 to Varna leaves the gate
22 h 30 apart on the timetable, overnight
TK 1075 leaves 22 h 30 after HH 575 arrives on the timetable: more than half a day, so not a connection we count.