I was looking for help on H1 and H2 tags and found this that answered my question.
But want to add that this will be an important feature to have in web stories.
I currently get an error for all my web stories in Bing Console telling me that h1 tags are missing.
If a search engine thinks a title is missing, it will surely be a negative factor for web stories in search results. Particularly outside of Google.
I’d be OK with one h1 per story, and one h2 per page.
Thanks for looking into this, @swissspidy and team.