Single Judge Application; the Board did not discuss the veteran’s contention that the RO’s request improperly described the contents of the record, constrained the August 2012 VA expert’s view of the file, and thereby essentially tainted the medical opinion; The Board is obligated to ensure that it provides appellants with fair process in the adjudication of their claims. See Smith v. Wilkie, 32 Vet.App. 332, 337 (2020) (citing Thurber v. Brown, 5 Vet.App. 119 (1993); Bernard v. Brown, 4 Vet.App. 384, 392-94 (1993)); In Smith, this Court held that the principle of fair process applies throughout the process of evidentiary development and is implicated when “the Board fails to procure a medical opinion in ‘an impartial, unbiased, and neutral manner’ when the opinion request contains a Board member’s own negative linkage opinion or otherwise suggests that an examiner should reach a predetermined conclusion.” Id. at 337-38 (citing Austin v. Brown, 6 Vet.App. 547, 551-52 (1994));