Exactly, it's not "dual-rated" at all, merely FAA CFIs (the majority I know of are US citizens) who have been approved by EASA, who teach towards EASA licences in the US. Thanks for the reference BillieBob.
How can EASA accept training given by foreigners, yet within the member states everyone has to jump through different hoops. Surely, if an FAA CFI is good enough for the job overseas, then why not allow a similar competence test to allow instruction within member states?
I already know about the 30hrs ground, 15hrs flight, as I went through a similar process to add an FI rating to my PPL, then passed the FI skills test and now possess the FI rating, and teach NPPL/LAPL. I am also aware that the CPL knowledge is an ICAO requirement, but as I already have that with my FAA stuff, I can't see why this can't be credited, to allow instruction towards PPL. Makes no sense.