Question Exchange messages synchronouslyRNIF20

Hi,
As we know in Rosettanet RNIF2.0, the message can be exchanged synchronously like PIP2A9, well, I found when we send a document to the wm.tn:receive to invoke a conversation we can not get the result within the same HTTP connection, that is “Asynchronous”, I wonder if we can implement the synchronously message exchanging in IS/TN.

Thanks