When a claimant properly appeals the denial of a claim for benefits from the regional office to the Board of Veterans' Appeals, that appeal remains in appellate status until it is resolved by the Board. See, e.g., Meyers v. Principi, 16 Vet. App. 228, 235-36 (2002). "The Board is 'bound in its decisions by the . . . precedent opinions of the chief legal officer of the Department.'" Hornick v. Shinseki, 24 Vet. App. 50, 52 (2010) (quoting 38 U.S.C. § 7104(c)).