I'm not an experienced user, so there may be a solution that can be pointed out?
To view a thread with multiple posts and pages there is a banner that allow that selection. Or you have to page through all posts.
On a fishing message board site - within the OP message preview it shows how many pages of threads and allows selection of the last page or any in between. This method works much better than what I've been doing here.
The referenced fishing site is - Walleye Central. If one wants to see what I'm suggesting. Perhaps I can figure out how to do a screen posting of it.