I would contribute the perspective that if he is being asked for his opinion on a specific topic that just so happens to be related to the company that he was known to be associated with before being hired on as an adviser, that wouldn't qualify as lobbying because he's being asked directly for his particular input on that topic. Now, if it's outside of the purview of what the advisory role is, and it could benefit those companies, then, yes, I agree; that would be lobbying.
