This is a bit of a rabbit hole, but I think I can give you a helpful solution.
Scrivener can sync to Obsidian via a sync folder. To accomplish this, it generates .md files that have appended numbers for ordering in a flat file system such as Obsidian’s. You could then zip up the Obsidian .md files (which are just plain text files) and send them on to your collaborators. Your collaborators could then move them into Obsidian (or similar) for reading, and they’ll be in the correct order. Or, you could use a cloud syncing method to share the Obsidian files with your collaborators (Obsidian offers a paid cloud version, btw, that might suit for collaborating).
You can read about sync folders in the Scrivener manual at 14.3 Synchronised Folders.
In case it’s helpful, I started a thread on this: Scrivener, Obsidian, and Aeon Timeline…Oh My! - Scrivener - Literature & Latte Forums. Though I also use Aeon Timeline in the mix, just disregard that aspect unless it’s helpful to your writing project.