A Compensation Event quotation was submitted to the Client. He failed to respond in the time frame, so a NFR was raised. Before the time expired on the NFR, the Client raised an EOT to assess the quotation. This time will be up in a couple of days. If they fail to respond, will a new NFR have to be submitted and start the clock again?
Just for clarity I assume you mean Project Manager when you say Client. Under the standard form of contract, the Project Manager cannot raise an EOT to assess the quotation without agreement by the Contractor. Presuming you did not agree to the EOT your original “NFR” remains valid.
Contractually, an extension of time to assess a quotation needs to be agreed by both parties. Therefore, it sounds like the PM is strictly out of time and your quotation is by default accepted.
Practically, it sounds like you have acknowledged their EOT and are satisfied to wait until the extended time period runs out. Another notice would need to be raised at this point to cover the expiration of the revised date.