Because AT&T is terminating their existing Medical Plan effective 1/1/2015, all medicare eligible retirees are being transitioned to a private AON exchange in Gurantee Issue mode. All Medigap Plans for each carrier are Gurantee Issue moves. Not all plans are available in specific carriers. Most common plans chosen are F, G, and N. Their are only 5 or so carriers with Plan F High Deductible. All cariers have regular Plan F. Some are missing G or N.
So you are telling us that AON is offering Guarantee Issue for plan G? If they are retirees and already have part B the plan G is not GI in the open market. Are you sure you know what you are talking about?