TK 299 then TK 246 at Istanbul
Guangzhou → Istanbul → Riyadh
Timetable, Istanbul time
13:40TK 299 from Guangzhou at the gate
20:20TK 246 to Riyadh leaves the gate
6 h 40 apart on the timetable
Istanbul’s board shows about 81% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
TK 299 and TK 246 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.