The 2x Rule
If what you share fits in the category of an For Your Information (FYI) then it should be conveyed at 2x speed.
How do I share information twice as fast? Record it and share your updates via links that support faster transmission. Youtube gives you this for free; set your videos to unlisted for a private solution which as a phone-friendly way share video&audio updates
I want to index what I share. Otter.ai allow not only 2x playback but also has built-in transcription; you can paste voice notes into other apps like Slack with a full text.