When PowerPoint files are converted to PDF, slide titles should be converted to H1 because PowerPoint currently does not establish a hierarchy of headings. However, when I test the PDF output with a screen reader, I discover that they are all converted to H2, and there is no H1 anywhere in the file. Adobe Acrobat Pro is flagging this as a heading issue in accessibility checker, but the slides are properly set up with title placeholders on the master layouts, so Adobe is improperly applying H2 to slide titles when no H1 is present. See these WCAG accessibility standards and techniques:

• https://www.w3.org/WAI/WCAG21/quickref/#section-headings
• https://www.w3.org/WAI/WCAG21/Techniques/pdf/PDF9.html