In a network of 12 routers each router has a TCP Listener and Connector defined. There are no TCP adaptor connections in progress.
The GUI topology page shows a green receiver host named egress-dispatch. Every router has a line drawn to this host. That's 12 lines going to the same little circle and its seriously confuses the topology page.
The egress-dispatch host and connections to it are purely for housekeeping purposes and are not involved in any activity that in important enough to be shown on the main page as it is.
This host and connections to it should be hidden.