Sonos Connect and Bose SoundTouch 300 (Soundbar)

Agreed! Thank you again!

P.P.S. Doesn't that restrict you to only the data on that HDMI? What if you connect DVD player or Blu-ray player on another HDMI port on the TV? Does it still carry over to the BOSE?

Yes. If I connect my Apple TV to the TV via an HDMI cable, the sound comes out of the Bose Soundbar. I tried the messy solution you suggested, but it didn’t work and I gave up. I also was using the HDMI for the TV connection to the Bose as opposed to the optical cable so I’m not sure if that mattered.

Using a Sonos connect only for accessing music on your laptop to me seems overkill.

Other options:

Buy a chromecast and connect to the TV.

Or install on your laptop a dlna software (kodi, plex, wmplayer) and use this to play to your TV via dlna client.

I kind of agree with you, but I’m not exactly sure what the benefit of the CONNECT is anymore vs. say an Apple TV?

If you're really just looking to get music from your laptop to play through the Bose, why not do it via the Bose's bluetooth or built-in wifi streaming capabilities and phone app? Understand the Bose will only take one (wired) input at a time, but that shouldn't keep you from using its bluetooth and streaming functions. There's really not a clean way for the Connect to fit in this setup and the Bose Soundtouch line is meant to be a Sonos-like product anyway.

I agree with User385289, just use the Soundtouch App already embedded with Bose and sell the Sonos Connect.
If are hard pressed to use the Sonos connect, then buy an analog to HDMI adapter.
https://www.neweggbusiness.com/Product/Product.aspx?Item=9SIV06X5061133&nm_mc=KNC-GoogleBizMKPL-PC&cm_mmc=KNC-GoogleBizMKPL-PC-_-pla-_-Cables+-+HDMI+Cables-_-9SIV06X5061133&gclid=Cj0KCQjwqM3VBRCwARIsAKcekb3d0YJtnnp34-6BszresrkXtBTGynzMj4ZTspsJm5kVuWubEUQvMHAaAvfAEALw_wcB&gclsrc=aw.ds
then plug it into the HDMI input on the soundbar and configure the soundbar button to select the HDMI input. there you go! PROBLEM SOLVED!:$

I agree with User385289, just use the Soundtouch App already embedded with Bose and sell the Sonos Connect.
If are hard pressed to use the Sonos connect, then buy an analog to HDMI adapter.
https://www.neweggbusiness.com/Product/Product.aspx?Item=9SIV06X5061133&nm_mc=KNC-GoogleBizMKPL-PC&cm_mmc=KNC-GoogleBizMKPL-PC-_-pla-_-Cables+-+HDMI+Cables-_-9SIV06X5061133&gclid=Cj0KCQjwqM3VBRCwARIsAKcekb3d0YJtnnp34-6BszresrkXtBTGynzMj4ZTspsJm5kVuWubEUQvMHAaAvfAEALw_wcB&gclsrc=aw.ds
then plug it into the HDMI input on the soundbar and configure the soundbar button to select the HDMI input. there you go! PROBLEM SOLVED!:$

:? Du you even know what the Sonos Connect is?