Do you also have knowledge of claims? Does this hold true even if I file a Board Appeal?
Yes. Remember you can request a Board Appeal after an initial claim, a Supplemental Claim or Higher-Level Review decision. But remember also, that you can't request two Appeals in a row.
Oh,  i see. I'll have to keep that in mind. What can you tell about the decision aftermath?
If the decision doesn't please you, you can file a supplemental claim. You may also appeal to the U.S Court of Appeals for Veterans Claims.