12 C.F.R. § 622.105
(b) Right to counsel. Any person who, in a formal investigation, is compelled to appear and testify or who appears and testifies by request or permission of the Board may be accompanied, represented, and advised by counsel. The right to be accompanied, represented, and advised by counsel shall mean the right of a person testifying to have an attorney present at all times while testifying and to have this attorney:
(d) Exclusion.