It sounds like you are proposing to use TN to manage a custom conversation between your Network elements.
TN has a facility to manage conversations where you can define synchronous and asynchronous conversations.
We have also essentially done this outside of the conversation manager by defining various doc types in TN and processing rules (and their associated IS flows) to take the appropriate action.
I can’t offer too much expertise or experience with the conversation manager.
We went the way of the custom conversation because our client requirements forced us down that path. It definitely complicates matters. In our case - handling the possibility of failed transport between our clients server and the hub required some careful implementation.
Hope this helps. Good luck!
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