(February 22, 2017, 9:23 AM EST) -- CINCINNATI — Parties in an insurance dispute asked the Sixth Circuit U.S. Court of Appeals recently to determine whether a federal district court erred in determining that an insurance broker’s agent had no duty to advise an insured of an exclusion added to a policy renewal that was not part of the previous policy (Atic Enterprises Inc. v. Cottingham & Butler Insurance Services Inc., No. 16-6549, 6th Cir.)....