Board Thread:LOC General Discussion/@comment-6053607-20130128172607/@comment-5534646-20130129143158

I may be wrong Congo, but I think they are talking about attacking another player, not a raid boss. And there was an update so now same skills effects do stack! I don't think they used to, but they do 100% now. I have both the new Tia and Pupp in my front line (Great Boost to Fire Attack), and when they both trigger, I get the effect of both of them.

Just to clarify because I am reading that original question as a battle question, not a raid question. But I agree with your description of raid skills. Hope that helps