Question on remoting server and client's cross action

Question

I don't really know how to put this into a formal question... the scenario is like this... From what I understood, the remoting server is "passive", which means it will wait and listen for an event to occur on the client's side. However, what I want to achieve is from client application X, it will trigger a request to remoting server Y, based on the processing result of the call, remoting server Y will post request to either client application Z1 or Z2... in this case, Y is the remote host for X, and Z1 or Z2 is the remote host for Y... can i "actively" invoke methods from Y on Z1 and Z2 without treating Z1 and Z2 as a remote host server?