Since both the back and bilateral knees below are located on the same Veteran, how can a VA DECISION in Rating Decision dated 11/2/2020 that states "the previous denial of service connection for degenerative disc disease, lumbar spine (claimed as back) as secondary to left ankle osteoarthritis is confirmed and denied" be valid if a VA DECISION in Rating Decision dated 4/10/202 stated "service connection for left knee degenerative osteoarthritis with patellofemoral pain syndrome has been established as related to the service-connected disability of left ankle osteoarthritis" and "service connection for right knee degenerative osteoarthritis with patellofemoral pain syndrome has been established as related to the service-connected disability of left ankle osteoarthritis"?