I recently ran a Void Ark with another Astrologian as second healer. First boss comes up and he typed out "i hate having double astro heals". Right after he said that I used my full party Arrow buff a nano second after he used his full party Balance buff effectively overwriting the his better buff.

Then he said "... wow for that reason exactly". I felt bad about it, but his attitude was not the best so not.. too bad haha. I made a point to tell him use his buffs first from now on.

He said "Usually whoever has group Balance goes first".

Is this true?

Is "Whoever has spread Balance buffs the party first" an untold rule of duo Astro healers in raids?