bbc... I have had first hand experience with the "tug of war". Even when I would speak with Mum on the phone in the kitchen, the new bride would begin rattling dishes and cutlery in the sink, etc. It's simply a territory issue with the young bride. And, it's simply that she doesn't know any better and, obviously, neither does your son. If either did, they would sort it out quickly. If both did, it wouldn't even happen.

Not to worry. Easy solution if the problem continues for too long. When this thread has "enough" posts, print it out and give it to your son and say, "Read this and tell me what you think."

If he comes round to sense, all is fine. If he does not, keep quiet... he will, eventually.