The invention provides a method and system for fusing message paths that occurred in a first domain in a communication network, with message paths that occurred in a second domain in the communication network a communication channel exists between the two domains. A first message path that occurred in the first domain and included a message sent to the second domain along the communication channel is fused to a second path that occurred in the second domain that included the message received from the first domain. Each message that is transmitted in the communication channel between the two domains is assigned a message unique identifier that allows each domain to associate a message sent from one domain to the other with a response message sent in the opposite direction.