Automatically 'accept' incoming changes in a ClearCase Synchronized Stream.

I have a bigger team using ClearCase and a sub team working with Team Concert. It is neccessary, to 'deliver' all stuff created in Team Concert SCM to a branch in ClearCase (non UCM).

My idea of a setup is to have a 'main' stream in Team Concert into which all RTC developers are delivering their changes. All stuff delivered to that main stream should automatically be delivered to the ClearCase Synchronized Stream which synchronizes the data to ClearCase on regular bases.

How can I have the automated delivery from my 'main' stream to the ClearCase Synchronized Stream?
(Because I do only one direction synchronization, there will never be conflicts.)

If I add the ClearCase Synchronized Stream as a Flow Target for my main stream, I can see the changes as Outgoing in the pending changes view. But I still have to deliver manually.