The Secretary of Energy (or the Secretary's designee) may approve the extension of any deadline established by this part, and the OHA Director may approve the extension of any deadline under §§708.22 through 708.34 of this subpart (relating to the investigation, hearing, and OHA appeal process). Failure by the DOE to comply with timing requirements does not create a substantive right for any party to overturn a DOE decision on a complaint.