Max hp regeneration? Stacking regeneration?

Sorry if this has been asked before, but i used search and could not find it.
Anyone knows if healing breeze and mending stack? with 9 hp regen + 4 hp regen would it become 12 regen? or would healing breeze just override the regen and for that time it would be only 9 regen?

And if they stack, is there a max for hp regen stacking?

The max regen or degen rate is 10 arrows, and at 2 hp regenerated per 1 arrow per second, it's a regen or degen of 20 hp a second at maximum.

Yes, Healing Breeze and Mending will stack, but 9 + 4 = 13 is reduced to the maximum of 10. However, if you are taking on a degen of 5 (Conjure Phantasm for example) 9 + 4 - 5 = 8.

Basically if you want a max regen, you just need to have the goal of hitting 10 arrows. If you want to combat a strong degen and still regain in spite of, go for over. If you're not taking on any degen, however, a regen that high is complete overkill. If you plan on using mending, you may want to just use a Vampiric weapon too, since Mending will override the constant degen.

cool...ty for ur responde man! really helpful