You would be best to contact Dynamotion and ask whether it supports double closed loop, its not very common on even high end machine tools from what I have seen.
As for EMC I dont know, it can close the loop to the motors just like your servo drives will do if digital but whether it can then use encoders on the table as well I dont know.
There was a product that came out that was supposed to do double closed loop but as far as I can tell it struggled with single loop never mind double.
Double closed loop is not an easy thing to accomplish especially if it is two separate parts that are trying to close one loop each. I would imagine they would be fighting each other so in the end one of the loops would have to be set rather sloppily so as not to interfere with the other and doing that would defeat the purpose of having double closed loop in the first place.
Just my thoughts of course, some others may view things differently
Hood