New Scene Description (accessibility) field for Rise Scenario Blocks

Did you ever learn any more about this?

This is all I could find so far in the documentation: https://www.articulatesupport.com/article/Rise-360-How-to-Use-Scenario-Blocks#accessibility

"Training creators must use the scene description fields available for the title, ending, dialogue, and responses. There is no alt text available for the background and character, so you'll want to include descriptions of each when creating your scene descriptions."

Text I've entered into the "Scene description (accessibility)" field is not visible to end users. So I suspect whatever is input there is strictly available to screen readers? However, the guide is unclear on what *must* be entered, i.e., do we need to duplicate the title, ending, dialogue, and response text in the "Scene description (accessibility)" field in addition to the fields explicitly labeled as such or strictly use it for alt text for the images?