(a) The basic time limit in Sec. 2.16 of this part may be temporarily suspended for the time it takes you to respond to one written communication from the bureau reasonably asking for clarifying information.
(b) The basic time limit in Sec. 2.16 may also repeatedly be temporarily suspended for the time it takes you to respond to written communications from the bureau that are necessary to clarify issues regarding fee assessment (see Sec. 2.51 of this part).