SC 2.2.2 (Pause, Stop, Hide) or SC 2.2.4 (Interruptions) might apply, but this implementation seems compliant with these SCs because it includes a pausing mechanism.
What about SC 4.1.3 (Status Messages)? I believe the alt text of the carousel panels does not constitute status messages. However, the "Understanding Success Criterion 4.1.3" document lists "Using role=alert or aria-live=assertive on content which is not important and time-sensitive (future link)" as a failure technique.