Is Dunn-Sidak approach in multcompare identical to so-called Dunn's test?

These two articles recommend Dunn's test as non-parametric post hoc multiple comparison test following Kruskal-Wallis test.

How the Dunn method for nonparametric comparisons works

https://www.graphpad.com/guides/prism/7/statistics/stat_how_the_dunn_method_for_nonpar.htm?toc=0

Dunn's test

https://stats.stackexchange.com/tags/dunn-test/info

MATLAB's multcompare (https://uk.mathworks.com/help/stats/multcompare.html) offers a few choicese for post hoc tests, including 'dunn-sidak'.

The name suggests that 'dunn-sidak' is Dunn's test mentioned above, but the description here says that it uses t distribution, so I thought that it is unlikely that this approach is used for non-paramatric data.

Is so-called Dunn's test identical to Dunn & Sidák’s Approach used by multcompare?

If not, is there a way to run Dunn's test with MATLAB? Perhaps, I need to use R (it has a package dunn.test) or Python instead?

[Kouichi C. Nakamura]

I've asked the same question elsewhere.

https://stats.stackexchange.com/questions/448974/is-dunn-sidak-approach-in-maltab-multcompare-identical-to-so-called-dunns-test