Similar to a texting screen, where each user has a different color. Blue or white background. Of course you'd have to use a different system. I don't think you could give each user their own color, but you might be able to have a color for each nested level. Rather than an indentation, some kind of shading. Original post in white bkgnd(1), then light blue(2) for first reply, then green(3), yellow(4), purple(5), orange(6), then start over at white. No indents at all. People will learn the color for see more the corresponding nested level. You might number a nest when the colors start over.

For that matter, you might even just forget the color, and number or symbolize the tier. Comment, reply a, b, c, c1, c2, d. Etc. Those numbers could get confusing, and my guess as not an advanced coder is the colors would be easier. However, if numbering or lettering the tiers is possible, that would probably use less memory? So you might use popular ascii symbols to denote the nested level rather than numbers.

I feel like regardless of the solution you decide on, there really needs to be one indentation. Any replies, or reply replies can be the same indentation, with the original post non-indented. Then shading or ascii symbols or something after the original post.