Yes, you can butt in anytime you want, but keep in mind you can easily offend others when they are not speaking to you. It's all in the approach...
Yes you are correct, that approach is important...but approach on any thread, for any reason, whether someone is talking to you directly or not. is important...
Frankly I see nothing offensive in what I said, I merely pointed out that any post is fair game...and oh yes, I questioned why someone keeps posing the same question to someone who has already said, that they are not going to answer...
Seems to me, a refusal to answer should just be accepted...