Clause 61.4 states that the Contractor has to respond to a notified compensation event within two weeks. Once this period has been exceeded, the Subcontractor may notify that there has been a lack of response, and after three weeks it would be deemed accepted that it is a compensation event and they could go ahead and produce/submit the quotation.
62.3 states that the contractor submits their quotation within one week of it being accepted (or in this case deemed accepted). There is no contradiction between these clauses and their timescales.
62.3 states that the contractor submits their quotation within one week of it being accepted (or in this case deemed accepted). There is no contradiction between these clauses and their timescales.