I have finally, after a year of searching and trial and error found the city of gold.
Issue #1 No HDMI ARC
Solution #1 Digital Optical Adapter
Issue #2 old Sharp TVs don't process digital to digital through HDMI ports. Only TV input playing through Sonos.
Solution #2 Therefore had to run Digital Optical into XBOX One rather than TV
Issue #3 Now only Xbox One is playing Sonos sound. What about other hdmi devices?
Solution #3 Run cable box or Chromecast with Google TV through HDMI IN on XBOX One and use one guide app
Issue #4 Lost capabilities of using Google Assistant with Chromecast
Solution #4 Enable voice assistant and power options on Xbox following these directions- https://support.google.com/chromecast/answer/9923520?hl=en
How sweet it is...