I main dnc on my alt and its easy to just look to see when the other dnc uses their buff. Same with ninja. If you don't want to actually talk to your other dncs or nins, just don't be trigger happy and pay the minimum amount of attn and you should be aok.

It's hilarious when we get 3 dnc in a duty like eden cause I sit back and shake my head as I watch the other 2 dncs both start the fight Technical step. I always wait a moment and sure enough, its never failed, whenever there is more than 1 of us, the other dnc immediately goes into tech step without hesitation, so I always just hold it.

Same can be applied to ninja. Seriously how is this so hard?