How do pet buffs work in pvp?

[Arrowz]

It is my understanding that all buffs stack except those to dmg in which only the greatest value damage buff will apply. So if for example sing hj and glacian AA's were all used then all buffs would apply. Is this correct?
Also, if two glacian AA's were used would both buffs be applied and stack or would it be the same as if only one glacian AA was used?
Thanks in advance for the help

[Haligali]

Same pet buffs not stack except samaels passive healing.

[Arrowz]

Ok thnx bro