Is there anyway to Link both of NA-EU data centers when we que for PVP ?

Both data centers speak English mainly, there wont be any delay or latency issues since everyone playing from his data centers, im not sure if its work from the technical side, but if this can happen, it will reduces the horrible waiting time for PVP .

Well not anymore because the NA datacenters are in Montreal and the EU datacenter is in Germany.

Also you only get queued up with servers of your own datacenter group.