Chill/Freeze Mechanic Uncertainty

I know that monster damage mitigation does not affect the magnitude of bleed/poison/ignite inflicted.

However, what about chill and freeze? The tooltips for these do not specify whether or not enemy damage mitigation affects the chill/freeze magnitude/buildup.

There is a tooltip that says enemy Elemental Ailment Threshold will affect these, but we have 0 info on what that actually is or how it works.

The use case I’m thinking of for freeze right now is Escape Shot, just focusing on freeze buildup. So, would front loading cold damage with Cold Infusion result in more Chill/Freeze buildup, or would Cold Penetration (assuming the enemy has cold res)? We don’t even have info on whether damage against Elemental Ailment Threshold happens after or before damage reduction calculation.

No one probably knows yet, but just asking in case anyone does.