Not sure if anyone experienced the issue below
Added Muso 2 to google home and set default speaker on Google nest to Muso 2 and all work well when streaming music on Google nest, it will locate Muso, turn on and play on default speaker (Muso).
But Google nest will not be able to locate Muso again the next time you stream music and the only way to resolve is to unlink Muso, recycle power on Muso and link Muso again.