Should I use "***" 3 asterisks or extra blank lines or whatever to indicate the breaks between parallel plot scenes, in a Kindle Vella fiction story?

Question

That is, for example, suppose I have two plots going on, and I've sandwiched (ie. interleaved) them; a few paragraphs of one plot scene alternating with a few paragraphs of a 2nd plot scene.

To reduce or mitigate reader confusion, I'd like some kind of indication between sandwiched plot scenes(, which I do so readers don't get exhausted during long action scenes or narratives).

NOTE: Kindle Vella automatically inserts one blank line between each paragraph; and no indentation of first line of paragraph.

OPTIONS:

1. Insert 1 or more extra blank line(s) at each break between alternate, sandwiched scenes.
2. Insert "* * *" centered on the line, or some other marking characters.

Answer 1

My two cents:

While I can think of no precedent or stylistic/formatting guideline for this, I feel that the '* * *' is rather more attractive. It has a sort of aesthetic appeal (personally speaking), and I generally associate double line spacing with a time skip or a fast-forward to the next scene, while the asterisks to me imply a change not only in time but also in perspective or setting. The only caveat is that several sets of these on a single page may look crowded or take away from the page's composition. This, I suppose, would depend on whether the entire book is split parallel or if it's only a chapter or two. Depending on how frequently the plot breaks you may want to choose something less obtrusive.