So we agree on all points.
As long as an examiner is authorised to teach and hold the equivalent rating (SEP, MEP, IR) he can perform the ST, PC or AOC. Even if the examiner only hold a PPL and the candidate hold a CPL or ATPL.
The "Competent" Authority of one of my examiner is telling him that as he only hold a PPL due to his class 2, he can only perform ST or PC on a candidate with a similar licence, so only to PPL holder and not CPL holder even if the PC is to revalidate a MEP or IR.
For me this bull***t but some "competent" authorities have some old rules in their mind.
thanks I'll now have to sort it out with that "competent" authority.