Much of iHeartMedia's debt stems from 2008 when 70 percent of the company, then called Clear Channel Communications, was sold to two Boston-based private equity firms, Bain Capital Partners and Thomas H. Lee Partners. About 30 percent of the company remains publicly traded on the over-the-counter market. The company, which is in the midst of a $14.6 billion debt exchange offer to lenders and bondholders, Thursday extended the deadline another two weeks to Aug. 18. Bressler and Coleman didn't discuss their negotiations with lenders and bondholders.