When the Visible/Hidden button is used, the clients (IOS and web client) do show "Captions currently disabled".
Once the captions are re-enabled, then all of the captions are then shown, including the words spoken while the Visible/Hidden button was being used.
It would be nice if (when the Hidden button is shown):
  1. audio stream is not sent to the AI web service to be turned into words
  2. (more importantly) the words are not shown in the web app once the Hidden button is pressed (and then becomes the Visible button).