Yeah, sounds like it is quite deep, maybe in the muscle, Hopefully not…
Before you go any further
Have you read this post about Bricking a NExT
@Backpackingvet read his work card with a blue cloner and it bricked it, I have never heard of that happening before, maybe somebody else has though, So just for your awareness.
Have a read before you carry on.
I dont have mine with me, but pretty sure it comes apart at the seam in two pieces, the antenna, is a small board antenna, probably stuck to the front face
That is what you want to access and press on your implant