He seems to have simply been clarifying the procedure. In the absence of a JIT, ILoRs would be the usual route. I don't see anything odd in what he said.
You were saying that LP had "refused access" which doesn't appear to be the case.
He doesn't sound like clarifying anything. There was a JIT but, when the McCanns were made arguidos, the British officers had to go back home too (without the British Officers, however, I doubt that Eddie had travelled to PDL at all).
Rogatory Letters are required by the Judiciary Assistance System, talking of "Portuguese ways" instead of "European" ways is misleading. I bet every layman will have understood that Portuguese ways are
special and that xenophobia will gain points.
Are you attempting to say that access to the bank accounts was granted as it would have been to a British police team, without restriction ?
Are you aware that this is not the only letter on that topic ?