We heard from the official earlier about the fact there are two versions—a short version and a longer version—of the name of the advisory body. In both cases, the words “advisory body” appear. The way I interpret this is that when simply “advisory body” is used, it refers to the longer form of the same name. My issue with calling it an “expert committee” is that it's entirely different, and that could result in confusion. Often in cases like this there's a shorter version that uses some of the words but not others, so I think it's clear enough. I did not intend to replace it with the longer version.
On June 9th, 2021. See this statement in context.