... the ability to send and receive messages and calls with other users (collectively, "Alexa Calling and Messaging") ...
1.1 General. Your messages, communications requests (e.g., "Alexa, call Mom"), and related interactions are "Alexa Interactions," ... Amazon processes and retains your Alexa Interactions and related information in the cloud in order to ... improve our services.
Section 1.3 of the Alexa Terms of Use: "...to provide and improve our services...".
1.3 Alexa Interactions. You control Alexa with your voice. Alexa streams audio to the cloud when you interact with Alexa. Alexa processes and retains your Alexa Interactions, such as your voice inputs, music playlists and your Alexa to-do and shopping lists, in the cloud to provide and improve our services. Learn more about these voice services including how to delete voice recordings associated with your account.
Section 1.1 of the Alexa Calling and Messaging Schedule (at the bottom of those terms) seems to imply that the actual content of your calls isn't what they call "Alexa Interactions", although if you call out to Alexa during the call ("Alexa, hang up"), that is an Alexa Interaction.
It's not very clear, though, and I feel like they could have made this clear very easily.
(I do expect Amazon to store the voiceprints of "Alexa, do foo" to improve their speech-to-text, as well as analyze the actual requests, yes, but I would hope that Amazon is not analyzing or storing the contents of calls.)
Yes, but those are Alexa interactions. I would not necessarily read that as including audio or voice messages to another human where Amazon is not expected to interpret or understand what you're saying, but rather to pass along the voice/video as a carrier.
Then again, you could read it that way. And Amazon might. This needs clarification.
Alexa Calling and Messaging Schedule
... the ability to send and receive messages and calls with other users (collectively, "Alexa Calling and Messaging") ...
1.1 General. Your messages, communications requests (e.g., "Alexa, call Mom"), and related interactions are "Alexa Interactions," ... Amazon processes and retains your Alexa Interactions and related information in the cloud in order to ... improve our services.
[1] https://www.amazon.com/gp/help/customer/display.html?nodeId=...