The video mentions how the headphone can't transmit through the body. The Kanao does seem to have a very weak connection, but isn't transmitting through the bo

The video mentions how the headphone can't transmit through the body. The Kanao does seem to have a very weak connection, but isn't transmitting through the body an issue with most headphones ? With my metallic case phone and jaybird plugs, I often have a better sound if I switch front pockets in order to have the phone on the same side as the plug's bluetooth receiver. Transmitting electromagnetic waves through a body is just hard and to be honest makes me a bit uneasy. I have never tried with the back pocket though