I took the AO exam back in 2000 and they found three conditions that the doctor said were AO related. It says in the exam that the exam does not represent a claim for benefits. I think you have to claim any benefit for a registry condition. I know I had to do that for every condition, and I had to show the nexus for secondary conditions via a medical report other than the AO exam. The VA says they do inferred claims but, in reality, it does not happen often if at all.