That's it exactly. Most of the time the distinction between the regular text and the displayed material is pretty clear in braille, just by virtue of the blank line. But in the case of your complex print, that distinction will tend to get lost in the braille, leaving the reader to depend on what the words actually say. The print reader of your book can rely more on relative position, but that is not available to the braille reader.
As mentioned, the new Formats rules will address this in new and interesting ways.