Heading Tags/Screen Reader Accessibility

Hi,

I am building a course for a client at work which I cannot share the files of, but I am currently working on setting up a course for accessibility purposes. 

However I am running into issues with heading tags requested by the user testing for us using JAWS.

The first issue is that the heading styles aren't been seen by the screen readers.

I had seen that using the heading styles should enable screen readers to navigate through levels of headers, however this isn't the case. When observing the user test after implementing this to all title text on slides, the JAWS screen reader doesn't pick up any headings/header styles at all on any of the slides. Despite there being at least one on each slide. 

I don't know what is causing this to happen, I have all text upgraded to modern from the design tab and each item on all of the slides are set up to have their alt text and every object is visible to accessibility tools.  

Question 1: Can any insights be provided into why the heading text styles are not being picked up by JAWS?

My second issue/query is that when the course title is enabled it does get read by the screen reader as "Heading level 1". This is good, but for our course we have this toggled off to prevent the course title from being read on every single slide. 
When this is toggled off the screen reader defaults to reading the title of each slide instead as the user navigates onto it, which is ideal. However, when these titles are being read by JAWS it reads out as "Slide: Title of slide". Ideally we would like the "Heading 1: " or "Heading 2:" functionality to read here instead of "Slide:" 

Question 2: Can the titles in the player be displayed like this? Is this a feature that I can already implement or could it be marked for future updates?