BJ 640 then C6 302 at Istanbul
Tunis → Istanbul → Tashkent
Timetable, Istanbul time
11:50BJ 640 from Tunis at the gate
10:10C6 302 to Tashkent leaves the gate
22 h 20 apart on the timetable, overnight
C6 302 leaves 22 h 20 after BJ 640 arrives on the timetable: more than half a day, so not a connection we count.