Google allows users to edit documents in Docs, edit speaker notes in Slides by using their voice, as well as turn on automatic captions while presenting inthat it has decided to expand availability of these features to more browsers like Safari and Edge. This an important step toward more inclusive and accessible user interactions within Docs and Slides for more users.
Keep in mind that these features are only available on desktop for the time being. Also, admins will be able to control which web browsers are supported in their domain.