Not really.PLAN alreay operated the ships and boats that needed for the aircraft carrier battle group for many years.For example the SSN,the air defence destroyer,the anti sub frigate.The question here is not that it will take the PLAN 40 years to put those boats and ships together with a aircraft carrier,but how long it will need to make the whole battle group operational.The arguments here are that its the first time the PLAN operates so many ships,boats and fighters together,how effective it could be?But definatelly I dont think the PLAN will take 40 years to learn how to operate a battle group.
The 093 SSN:
The 052C air defence destroyer:
The Soviets couldn't accomplished it for the years of Cold War which was half century. Are you saying China can do that in just a few years to operate effectively as a carrier battle group? It takes a lot of ships, training and coordination to work effectively. One mistake and the carrier goes bye bye.