Does Pressbooks export into Ingram Spark?

Hi All,

I discovered Pressbook Pub. on the Ingram Spark page that mentions “experts” that can help self-publishers.

I think the idea is that Pressbook can be used to export the entire book into Ingram Spark.
Can Pressbook actually do this? How does it work?
Does it create the .pdf and make the “embedded fonts” needed to meet Ingram’s very tricky rules?