Think of it like folding a sheet of paper. Every time you fold it, you double the number of layers (2, 4, 8, 16, etc.). So, a single piece of steel folded 200 times gives you 2^200 layers, or 1.6 x 10^60. If they used 2 different steels (supposedly 1095 and 15n20), then that's 3.2 x 10^60 layers.
If they hammer that all out to, say a generous 1/4" thick billet, each layer would be 0.25 / (3.2 x 10^60) inches thick, or 3.1 x 10^-61 inches. The
atomic radius of an atom of iron is 126 picometers, which converts to
4.96 x 10^-9 inches. So, an atom of iron would be 1.6 x 10^52 (
16 sexdecillion) times thicker than each supposed layer in this steel. Obviously, that wouldn't be possible.
If they did actually fold the steel 200 times, you'd effectively end up with a homogenous blend of the two steels, not actual layers. Using another analogy, start with two different colors of Play-Doh layered on top of each other. Fold that over on itself, and flatten it out. Repeat 200 times. What you end up with won't be layers of the two colors of Play-Doh, but a blend of the two.
By comparison, a real damascus manufacturer, like Alabama Damascus, achieves
416 layers by starting with 13 layers of different steels and folding it 5 times (13 x 2^5 = 416).
