Is it possible to tell if someone is hyper-mobile by their neck?

Hi people. Im new here but I can’t stop thinking about this one thing. I was talking with a good friend of mine about medical stuff and mentioned that my ACL tear was probably always going to happen because of my hyper mobility. She paused for a second and said ‘oh I had a feeling you were hypermobile by your neck.” I was so confused by what she said. When I asked her to clarify what she meant by that she responded that people with hyper mobility just have certain types of necks and she can tell based on that. (Wtf???) I thought she was referring to my stretchy skin but she legitimately just meant the shape of my neck. Mine is quite slender and long for my build which might be it but I’m still not sure.

She had HEDS (Hypermobile elhers danlos syndrome) so I don’t doubt that she has a point but it was so strange. I just want to know, can you really tell by someones neck??? Im so curious.

Edit: Just to clarify, I dont have HEDS. Im really hypermobile, like ticking all the boxes on the Beighton score test hypermobile.