Brian Reynolds had what the 7th U.S. Circuit Court of Appeals described as a “plausible” theory for his malpractice claim against the law firm he hired to provide legal services to several limited liability companies he managed and co-owned — “his personal interests were so closely bound with the interests of the LLCs as to be functionally indistinguishable” — but Reynolds’ lawsuit against Henderson & Lyman, or H&L, was “foreclosed by decades of Illinois law.&rdquo …