Thank you for the reply...I have read to answer from the "worst day" perspective. While I don't recall being asked the question for my initial C&P when I retired, nor for a follow up claim regarding my ankles...it nearly cost me my OSA as secondary to the AR claim as the VA dr. that did my C&P exam folded when the VBA rater pushed back on my OSA claim. I won on HLR and a good AmVets rep. doing the conference for me. I do wish I would have known about secondary claims after I was initially dx with OSA in '07. I'm at 0% for the AR so may bring up the matter of blockage at a pending ENT consult to see if I can get it documented.