The issue is the wireless protocol used by the hearing aids (which I believe it is proprietary). The TV box thingy is like a "normal" Bluetooth transmitter for

The issue is the wireless protocol used by the hearing aids (which I believe it is proprietary). The TV box thingy is like a "normal" Bluetooth transmitter for a TV, the only differences are that my mom's one has direct RCA and optical instead of an audio jack and a blue led to show it is powered and a brightish orange one to show if the connection is active, here it is: https://www.hab.online/product/oticon-connectline-tv/ https://www.hab.online/product/oticon-connectline-tv/ The neck thingy is this one: https://www.hab.online/product/oticon-streamer-pro/ https://www.hab.online/product/oticon-streamer-pro/ The above (UK) site seems to have all versions of these thingies, here: https://www.hab.online/product-category/wireless-and-remotes/oticon-wireless/ https://www.hab.online/product-category/wireless-and-remotes... The alternative: https://www.hab.online/product/oticon-connectclip/ https://www.hab.online/product/oticon-connectclip/ we tried but it is too small for my mom to use comfortably. Here is the manual of the streamer, with more details: https://www.oticon.com/-/media/oticon-us/main/download-center/connectline/ifu/151509us-streamer-pro-13a---instructions-for-use.pdf https://www.oticon.com/-/media/oticon-us/main/download-cente... Check also this: https://www.ndcs.org.uk/information-and-support/technology-for-deaf-children-and-young-people/products-and-services/radio-aids-streamers-and-soundfields/oticon-connectline-streamer-pro-13-a-open-and-accessories/ https://www.ndcs.org.uk/information-and-support/technology-f...