Use two markdown processors side by side?

[p3palazzo]

I am wondering if I can run two markdown processors from .config.js. My use case is that for one of the collections in my website, I want to run the markdown files both to generate regular html pages, and then to also generate reveal.js slides. I have both configurations set up as pandoc defaults files, but I don't know how to pick that collection and tell eleventy to run it through another markdownToHtml processor.

Edit

This is my repo, by the way: https://github.com/p3palazzo/TAU0009