ThingWorx Federation with Connection Server

Hi All, 

Just a question comes to my mind, while learning about Connection Server.

We know that Connection Server is routing WS from device/edge to remote things on platform and it is recommended to use when there are 50k+ remote things on the platform

So, we know that ThingWorx Federation is sending information from thing in the server A to be Remote Thing to server B.

Is it worth to use connection server to route the remote things in the ThingWorx Federation ? Maybe become more scalable etc.

Thanks