We moved into our current house 11 years ago. We adopted an older greyhound who was about 7 at the time. About a year later my NDN bought a puppy and basically made no attempts to train it. Our dog (who had spent most of his life in kennels) never reacted to it unless it was persistently left to bark at the shared fence. When that happened, we let our dog give him a couple of woofs before calling him in (which he reliably did). NDN then gave that puppy away and a few months later got a new one which they to bark persistently at the shared perimeter. By this time our old dog was too settled to care, so didn't react.
Our dog old passed away earlier in the year, we've since adopted a couple of young rescue dogs. No real issues with barking. There's a breeder at the back of our house with dogs barking all day,...until School summer break where the neighbours expect to be able to let their untrained dog to continue to bark as much as it likes. We've always applied the '2woofs and you're in' command to our dogs and it's consistent. A few days ago, NDN approached me, for the first time, to want to introduce our dogs on a walk. I think they want a scenario where they can continue to let their dogs bark as much as they want with v little intervention/training from themselves.