How does dodge stack?

So I'm mostly reading this Reddit for Hades 2 knowledge and of course what I have learned myself.

Does all dodge stack to make a whole percentage or does each skill have its own solo chance at working.

If I have two dodge boons working at 10 does that add to 20 or do both have a 10% attempt to block solo?

I always presumed was stacks up but I had alot of dodge boons when last played 5 days ago or so. And it was like I offended the mobs. I know is a randomness going on.

Sorry if it's a simple question but I'm a simple man.