By the above I meant that I had deleted my post quickly but obviously not before you saw it, just clarifying.
Anyways another thing is I know very little on how operationally AD is handled bet the forces ,
But I doubt altitude is a delimiting factor among other factors
Bec think it this way , as a example if a target flies blow 6 km altitude and army AD is unable to attain a fire solution, iaf might attain a fire solution to the very same target below 6 km with a higher altitude higher range system, so IMO whoever obtains the optimal fire solution will take the shot
But that's my opinion, it could very well be wrong too, take it with a pinch of salt