@bruceandruth1970 What brand of hearing aids are you using? There may be a smartphone app that you can use to adjust the amount of signal from the bluetooth and the hearing aid microphones. If you don't have the ability to adjust it with an app AND you have a name branded hearing aid, your audiologist should be able to program the hearing aids to provide the mix you want (for instance 60% bluetooth, 40% microphones). You just wouldn't be able to adjust the mix "on the fly".
Tony in Michigan