Cast when Stunned support X Avoid interruption while casting passive

Please help me.

If i have 100% avoid interruption while casting, can i still get stunned to count for cast when stunned spells?

cast when stunned: Cast when Stunned is a support gem that causes a linked spell to trigger when the player is stunned.

Avoid interruption while casting says: Avoid interruption from stuns while casting (it doesnt say: avoid stuns)

I have done some tests in the past but im not sure if this works.

Well doesnt work. And if worked would be really overpower to self cast and cast when stun at same time.

That passive should be write as:"Cannot be stunned while casting"