The Land Use Board shall act upon any appeal or any application for development within 120 days either from the date the appeal is taken from the decision of the municipal official or from the date the application for development is certified as a complete application, as the case may be, or within such further time as may be consented to by the applicant, except that when an applicant elects to submit separate consecutive applications, first for a use or other variance approval pursuant to § 190-702D of this chapter and subsequently for site plan, subdivision or conditional use approval, the one-hundred-twenty-day time period for action shall apply to the application for approval of the use or other variance, and the time period for granting or denying any subsequent site plan, subdivision or conditional use approval shall be as otherwise provided in this chapter.