do overcapped stats come into calculation when enemies reduce stats?

[fair acorn]

So for a few examples

CDR cap is 40%. Let's say I build 60% CDR and the enemy uses abyssal Stone on me to reduce my CDR by 20%, would my 20% from overcap stats come into calculation once I'm reduced below the 40% cap from the item? Or what the game just pretend to stats don't exist since normally they don't do anything.

The HP5 cap is 100, if I build 170 HP5 and I get anti-healed for 40% is my HP 5 value lost mitigated by the excess 70 hp5 I technically have built?

If I overcap attack speed by 30% so my attack speed is 2.5 but the enemy is running Aura attack speed reduction of 25% which would reduce my cap attack speed would they overcapped stat values come into play?

These are just examples I don't care about any specific example unless it performs and behaves differently than the others.

Does anyone know the answer to this?

[brazen dragon]

so how it works is cooldown reduction is capped at 40%, and if you build more it will not take affect. Hence the term overcapped. So if the enemy builds abyssal your cooldown will be reduced to 20% per the items effect duration. The only time anything over 40% will be calculated is if there is an item that will allow your cooldown to be set to a new cap, like Bauble for example.

For the second question, Antiheal does not affect HP5, antiheal affect healing from abilities/outside items/sources.

[fair acorn]

So if any stat is reduced the overcapped stat does not come into play at all

[brazen dragon]

correct, unless ther is an in game item/buff/mechanic that would allow you to overcap to a new limit. Other than those very specific scenarios, overcapping will not benefit you in any way

the only situation you want to overcap is with a silverbranch on a hunter