I have a family member with hearing aids that are Bluetooth enabled and connect to smartphones and laptop computers. I want to attach them to a Roku device, thus sending the audio to the hearing-aids while simultaneously sending the audio to external speakers for other viewers in the room. Essentially, I'd like to use the private audio feature through the Roku app without shutting off the external audio. According to the private audio description, it seems to be either one or the other but not both. Any assistance would be appreciated.