Percona Cluster to Cluster Setup

I have been looking at several9s and it looks like they offer a cluster to cluster replication.  
I am looking to be geographically diverse and have the second cluster run 30 min or so behind the primary cluster (slave delay basically)  I have not figured out how to make two clusters talk to each other other than adding the remote site into the primary cluster.  Does any documentation exist for this?


What you want to have here is two separate clusters A and B and cluster B is a slave of Cluster A and only “reads” go to cluster B if at all required knowing that you want it to be delayed. Basically setup two clusters and then choose one node from A and B to be the async nodes. Configure standard asynchronous replication from Cluster A node3 as master to Cluster B node1 as slave. Configure slave replication on Cluster B node1 as delayed. We do not recommend master-master replication between these two nodes (inferring from your comment regarding - “two clusters talking to each other”).