I was interested in what totems stacked with each other when cast by multiple shamans?

For instance, if all 5 threw down healing stream totem would you get 5 healing stream totem buffs for 500ish healing every 3 seconds?

Or does stoneskins stack for 5x damage reduction?

I know that WF won't give you 5x windfury enchant on your weapons

Any help would be appreciated

thx