C6 301 then GQ 671 at Istanbul
Tashkent → Istanbul → Athens
Timetable, Istanbul time
14:30C6 301 from Tashkent at the gate
10:30GQ 671 to Athens leaves the gate
20 h apart on the timetable, overnight
GQ 671 leaves 20 h after C6 301 arrives on the timetable: more than half a day, so not a connection we count.