With the chat pool, you will have session chats with inactivity timers to wait for a response from an "user agent". It has 2 modes, one of which does not store anything in the OutSystems database, it depends a lot on Google Firebase to send and receive messages. The other modality stores messages in the database and uses Firebase only to warn the user about new messages. 

Count Down Timer is a Pure Javascript visual count down timer that triggers an action when it expires. You can set how many seconds you want it to have and in the end it will trigger an event if not stopped in time. This sample is Mobile but it can be easily ported to a reactive app.

This component implements jQuery plugin jquery-confirm, for more details you can see: http://craftpip.github.io/jquery-confirm/, please note that are a project showing how to implment this plugin.