Too often, the line gets blurred between what a lawyer does for a corporate client and what a lawyer does for the client representative. It's well established that when the corporation is the client, the lawyer's duty goes to the entity, not to the representative of the entity, no matter how well lawyer and corporate rep may get along. Without an agreement of individual representation, the corporate rep shouldn't expect to be in an individual attorney-client relationship.
Elizabeth Holmes of Theranos found that out the hard way. When Theranos went into bankruptcy, the bankruptcy trustee waived the attorney-client privilege. As a result, all of her communications with the company's law firm were no longer confidential. She had no right of her own to claim the attorney-client privilege after the company's waiver.
This can be addressed with a careful engagement agreement that addresses just who is the client and who is merely a client rep.