12 C.F.R. § 1272.5
FHFA may request additional information from a Bank necessary to issue a determination regarding an NBA. After an initial request for information, FHFA may make subsequent requests for information only to the extent that the information provided by the Bank does not fully respond to a previous request, the subsequent request seeks information needed to clarify the Bank's previous response, or the information provided by the Bank raises new legal, policy, or supervisory issues not evident based on the Bank's NBA notice or responses to previous requests for information. Nothing contained in this paragraph shall limit the Director's authority to request additional information from a Bank regarding an NBA for which the Director has extended the review period.
12 C.F.R. §1272.5