A Google and forum search does bring up some information about this feature and Samsung phones.
One such thread is Android-Streaming-for-Hearing-*****-ASHA-support-in-Galaxy-A.
I hope this and other resultsvia a search may yield further information for you.
I wish you all the best with this situation.
🌈 Stay Safe & Stay Alert. 🌈
Current Phone ~
Samsung Note 20 Ultra 5G SM-9820 _ Samsung One Ui 2.5/ Android 10. Snapdragon 865+
@DavidHa: If you go to Settings > Accessibility > Hearing Enhancements > Hearing Aid Support > Bluetooth Hearing Aid, and follow the on-screen prompts, you should be able to sync your hearing aid to the device. If you're still having issues, check the Google Play Store to see if there is a companion application for your hearing aid, as this may be required to access some of the features you wanted. For further clarification, please contact the hearing aid manufacturer directly.