

As long as it is clearly communicated by him what he’s doing and why, any approach is fine really. So as long as he tells her his exact purpose of the break and what he needs to stop it, all good.
If that is not done, and it’s just a one-sided decision of his to stop talking, not even explaining anything, then it is very bad. It’d basically be like a parent punishing their child and not telling them what for, mentally very problematic. Of course it should be able to be implied by her in some way, but it’s very easy to come to the wrong conclusions.
Second question, you simply don’t let them. You calmly keep repeating your question, pointing out their intentional ignoring, stating that you will only talk with them about anything else after this question is answered, until they either get so mad as to run away, or they respond to it. But you have to actually stay strong, and not allow them to do it. Depending on other things that need to be communicated, and how stubborn they are, that will hurt yourself as well as them since other important stuff for you might not get communicated. But that is something that needs to be tolerated, because breaking from the original intention is worse for the future, it shows that ignoring the question works, and they’ll repeat it.
If you shit your pants, do you keep going with your week or is your week over?
If you shit your pants, do you keep going with your month or is your month over?
If you shit your pants, do you keep going with your life or is your life over?
I clean up and do whatever I still feel like. The arbitrary border of “day” means nothing to me, same as any other arbitrary border.