An Azure service that turns documents into usable data. Previously known as Azure Form Recognizer.
I used the solution here: https://stackoverflow.com/questions/68141650/form-recognizer-labels-not-loading
which basically made me consider that maybe the extended loading was due to the application being unable to operate on a specific file in the blob. So I cleared out & started with a single file, & it worked. I'll just be updating a few files at a time & keep track on which file has an issue & disregard it.