I thankfully haven't bought any Nest things, but your mention of Google Home turns out to have triggered me slightly! Many years ago, I bought a bunch of Chrom

I thankfully haven't bought any Nest things, but your mention of Google Home turns out to have triggered me slightly! Many years ago, I bought a bunch of Chromecast Audio devices - these are/were little wifi dongles with a 3.5mm jack and USB power. I could set them up as a group and they'd sync perfectly with each other. I had a pretty cheap multi-room sound system. Then at some point, the Google app I was using for them stopped working and it transpired the functionality had been moved to "Google Home". Over the following few months I spent hours turning the things off and on again, resetting them, re-creating groups, but it never worked for more than a few hours. I gave up, went back to bluetooth. Google Home needs to die.