Maybe this will help?
https://xdaforums.com/t/app-aamotomic-route-android-auto-mic-to-helmet-interphone-cardo-sena-free.4777722/
At the moment I'm using iodeOS
Maybe this will help?
https://xdaforums.com/t/app-aamotomic-route-android-auto-mic-to-helmet-interphone-cardo-sena-free.4777722/