I think that may be your only option as I couldn’t see any compatible physical connections - the hdmi arc connections on both units are input only from a tv so couldn’t be connected to each other.Okay, just tried the DLNA cast and it worked but I'll have to do some more fiddling to see how it works with the rest of my speakers, etc...
How's your setup connection looks like? What was the issue?In the end I wound up keeping both systems completely separate and I no longer use Sonos for music. In my case I never got the results I wanted and found it easier to just add another speaker to this room instead of trying to shoehorn the Sonos crap in with everything...
Gotcha. I'm also considering adding 2 front speakers for Wiim Ultra for a backup plan. My expectation is to be able to add subwoofer without spending $700 on Sonos sub and ability to stream/cast music with ease through wiim device and output the sound via Sonos + use the setup for watching movies.The issue for me was that it was unnecessarily over complicated and unreliable to play both systems (Wiim speakers/devices & Sonos) together using DLNA or Chromecast, etc... I wanted a smooth, simple way to play music across everything without having to fiddle endlessly.... I have that now using WiiM only (WiiM app with WiiM speakers/devices).
Not saying it does not work, just saying it didn't work to my expectations.