Answered: NEC3 ECC: Interpretation of clause 64.2

Under clause 65.1, first bullet if the PM agrees with a quotation, then he or she "notifies his acceptance of the Contractor's quotation". So if compensation event affects time to some extent, the the quotation should contain the alterations to the Accepted Programme in it (as per 62.2).

So if it does not then the PM should assess the time element.