Using Sonos Connect to link Bose Cinemate 130 and Sonos One

The connect can output to optical, coax or analog. Looking at the Bose, it looks like all of those can be inputs, but they aren't labeled all that well. So I would tentatively say, yes.

So, If i play content from let us say Apple TV, it will play both on my soundbar and sonos one at the same time?

Yes. That's true... I've checked and connected similarly and it is working perfectly now...🆒

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Does not work. I have connected the Sonos Connect's optical out to Bose Cinemate's optical in. I was trying to play content from apple tv (which is connected to one of the HDMI inputs), I don't get sound in Sonos, it still plays in the Bose sound bar

I’m confused. You have the sound going in through the HDMI input on the BOSE, correct? Why would the “optical input” on the BOSE be sending out any signal, and why would the optical out on the Sonos be able to receive that data?

Assuming we really are talking about a CONNECT here, you’d have to take an analog out ( generally RCA ) from the BOSE and connect it to the Analog in on the CONNECT. Once the cable is connected, the line in controls would then appear in the Sonos controller app, and you would be able to adjust the levels as necessary.