(March 5, 2024, 9:09 AM EST) -- DENVER — A liability insurer argued in its answer brief in the 10th Circuit U.S. Court of Appeals that the appellate court should affirm a district court’s ruling that it does not owe a duty to indemnify the appellant health insurer in an underlying multidistrict litigation (MDL) antitrust dispute involving an excess errors and omissions (E&O) policy issued by a now-insolvent insurer....