Multiple authentication mechanisms simultaneously

I'm curious whether there has been any talk of supporting multiple authentication mechanisms simultaneously? The use case would be writing a JAX-RS endpoint that provides an API, some HTML/JS that provides an UI on top that API, and then bundling them together as a single application. I would then like to offer BASIC authentication for "machines" interacting directly with the API and FORM-based authentication for "humans" interacting indirectly via the UI.

No files, tests, or entry points are named. Start by reading the issue discussion and reviewing how Jakarta Security handles the JAX-RS API alongside the HTML/JS UI; done would require a clearly defined, agreed approach for simultaneous BASIC and FORM authentication.

Written by the indexing model from the issue text.