For purposes of this part, an NCUA employee is considered to be the “senior examiner” for a federally insured credit union if the employee—

(a) Has been authorized by NCUA to conduct examinations or inspections of federally insured credit unions on behalf of NCUA;

(b) Has continuing, broad, and lead responsibility for examining or inspecting that federally insured credit union;

(c) Routinely interacts with officers or employees of that federally insured credit union; and

(d) Devotes a substantial portion of his or her time to supervising or examining that federally insured credit union.