Qurate Retail Group already owned QVC Inc. when it acquired the Home Shopping Network. The transaction reportedly gave Qurate control over 95 percent of the direct response television market. And after the merger, in-house counsel at each of the subsidiaries started communicating with employees at the sibling firm under an “affiliate company shared services agreement” that was drafted to provide protection under the joint-client privilege. But it didn’t work as planned for emails that are relevant to Suzanne Somers’ 9 …