Whenever a proposal for development in a planned development district involves a change of zone, such application and procedures as specified in Article
XIX shall be followed, with the additional requirement that the site plan review involving the proposed development accompany the application for change of zone. Notwithstanding any other provision of this chapter, whenever a site plan review accompanies an application for change of zone, it shall be reviewed and acted upon at the same time and according to the same procedures as the application for a change of zone, and the Town Board may make its approval of the zone change conditional upon development in accordance with an approved site plan application and may provide for the approval of the site plan to expire if development has not begun by a certain time.