i will not agree for that.
Idle Connection Timeout (minutes): it is for WIPS
Specifies the amount of time, in minutes, that the server waits for a request from an idle connection. Setting a value that is too low can cause a request to close prematurely. Setting a value that too high can caused requests to be queued while the server waits for idle requests to be closed.
Default value is 20 (minutes)
Session Timeout in (web.xml): this is for the Web application server/Tomcat
This will be for the Web application server/Tomcat timeout. Tomcat session will be activated from the user logged into the Launchpad and keep for 30 Mins