A3 953 then EC 3656 at Athens
Riyadh → Athens → Milan
Timetable, Athens time
07:40A3 953 from Riyadh at the gate
11:10EC 3656 to Milan leaves the gate
3 h 30 apart on the timetable
The last days
A3 953 and EC 3656 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.