If I have two Heralds in my party will their Paladin and Chanter buffs stack?  

Not the ones of the same name, no.

They do not stack but having 3 pallys lets you have all three auras up at once.

It's also funny to have all three single class Pallys using divine immolation and white flames (healing each other while burning everything else).

Edited November 27, 20187 yr by Theosupus

Afaik multiple Ancient Memories stack. At least they used to.

 

Exalted Endurance's and Ancient Memory's healing stack.

Does Dragon Trashed from multiple chanters stack? I have that pretty stupid idea of making Magran Priest/Troubadour with party of companions/sidekicks who can multiclass as chanter - Pallegina, Konstanten, Fassina, Vatnir (Tekehu can't use Dragon Trashed iirc), puting Prodigy - Firestarter on the playlist and having fun until my entusiasm burns out.

 

I never had more than one chanter in PoE 1 nor in Deadfire.