Level of Participation by Enhanced CxA in Fundamental Cx Tasks

We are currently working on a project where an independent third party was contracted to perform Enhanced Commissioning tasks, and a disinterested employee of the General Contractor performed Fundamental Commissioning tasks.  The independent third party enhanced CxA was involved in all fundamental commissioning tasks, however the disinterested employee of the General Contractor actually created the fundamental commissioning documentation and was listed as the fundamental CxA on LEED Online.  The LEED reference guide states that the same CxA "overseeing" the enhanced commissioning tasks must also "oversee" fundamental commissioning tasks. What exact level of participation is required by the Enhanced CxA in fundamental Cx tasks? Can they simply review the fundamental documentation and witness FPTs, or do they actually need to create the documentation? Does the same CxA listed on EAp1 also need to be listed on EAc3?