Single Judge Application; In Chavis, the Court explained that the ankylosis requirement in 38 C.F.R. § 4.71a “can be met with evidence of the functional equivalent of ankylosis during a flare.” Chavis v. McDonough, _ Vet.App. _ , No. 19-2928, 2021 WL 1432578, at *1 (Apr. 16, 2021) (emphasis added); Chavis changes the landscape; examiner did not consider whether the functional limitations appellant experienced regularly and during the examination were akin to a functional equivalent of ankylosis. Though the Board did mention appellant’s daily flare-ups, pain, and functional limitations of his neck, the Board did not address how this potentially favorable evidence compared to ankylosis;