Checkpoint 2.2 For a presentation that requires user input within a specified time interval, allow the user to configure the user agent to pause the presentation automatically and await user input before proceeding.
Further clarification is needed.
This should be clarified in the techniques document. It is reasonable to allow the client-side scripting to prompt the user for input, and if the user doesn't respond in a set amount of time, say 6 seconds, then the connection can be closed. If the user didn't respond to this additional time request, then the connection would close. However, it will recognize some information encoded in scripts, such as code to open a viewport or retrieve a resource from the Web.