As-built dates and delay event

NEC3 and NEC4 Contracts
1

Hi, if the delay event happened few months ago (say from 5 Sep to 30 Sep 2020) and the baseline programme data date used is on 30 Aug 2020 and say notification date is 1 Sep 2020 , I have the ffg. questions:

  1. I note that the delay event as-built dates will be used, but should I use also as-built dates for the concurrent activities and subsequent activities dates of the delay event?
  2. Should I also reflect the as-built logic of concurrent and subsequent activities?
  3. If the answer to item 1 and 2 is yes, up to which date I need to use the as-built dates of the concurrent subsequent activities? Is it the immediate successors only or up to today?

Thank you.

2

Can you clarify which contract you are using

3

NEC3 Option D, target cost.