Hello Alexander,

Yes you can add a feed from another feeder. If you want just to link the feed in the project you can use the link function to add it. If you want to display it you need  find a custom code to get this feature, this code can be added in WebSite X5 with the HTML and Widget object in Step 3. In this way, if you find scripts that suit your needs, you can easily use them inside the Software. Also if I cannot give support to third party custom code, I can explain you how to add it in WebSite X5.

Please feel free to write back if you need more information.