B9 9731 then J1 4806 at Istanbul
Shiraz → Istanbul → Tehran
Timetable, Istanbul time
13:15B9 9731 from Shiraz at the gate
19:00J1 4806 to Tehran leaves the gate
5 h 45 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
B9 9731 and J1 4806 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.