When I reply to two posts in a thread, my posts are merged into one entry. I thought it was based on the amount of time between my posts. I see no warning while composing the second post that this will happen. In particular, "PREVIEW POST" does not show this.
I'm sure I have seen consecutive posts by one person, *not* combined into one post, with timestamps that differ by much less than the difference in timestamps of two of my posts that *were* merged.
Is there some setting I need to use to keep posts separate?