NaB, my mate is bright enough and experienced enough to understand the difference between C3I systems and combat systems and I have spent enough time writing IERs and trying to squeeze quart sized pints of info down pint sized comms pipes to know how difficult it can be. Nevertheless, that was the plan. All part of the RNs attempt to give the impression of being a Rolls Royce Navy whilst actually using Hyundai/ Daewoo platforms (because that was all that could be afforded).
The idea of a JFHQ(Afloat) in a converted CVS was the recognition that the Battle Staff needed more space & their own extensive Comms suite. It was an attempt to get this capability via an additional project budget.