I am looking for anyone who can provide me some guidance. I was awarded 20% disability for knee arthritis on 5-17-21 but denied sleep apnea as secondary to my knee disabilities on 5-24-21. I did have buddy statements, a letter from my wife, documented diagnosis of severe sleep apnea, a prescription for my CPAP and a nexus letter from my sleep doctor. The nexus letter was ok but probably not as strong as it could have been. I am in the process of obtaining a second nexus letter. My question is, does it make sense to file a supplemental claim or should I appeal directly to the VA Board of Appeals. My VA Rep said we could go either way but the board will take 4 years. I dont want to waste up to 120 days if the local office is more likely to deny me again. Does anyone have experience with getting sleep apnea service connected at the supplemental review? Thanks for any help.