No, in both cases I read new posts and thought "oh, no one replied to my post" and then after reading all new posts I would go to the forum, then click on the private topic and my post would have replies from others.
That is the scenario that happens to me at times as well in the regular forums (I don't participate in any private forums).
BS7: arrived 9/13/13
When you finally learn that a person's behavior has more to do with their internal struggle than it ever did with you, you learn grace.