Decision. No amendment of this chapter, of whatever nature, that has not been approved by the Planning Board shall be adopted except by at least a super-majority vote (four Town Board members) of the Town Board, provided that failure on the part of the Planning Board to report to the Town Board its recommendation on any proposed amendment initiated by proposed resolution or amendment of the Town Board within 45 days after initiation of proceedings therefor shall be deemed to be approval thereof, unless such proceedings have heretofore been terminated.