Plugging Pact into CI / CD

I would like to as some basic questions concerning plugging Pact into CI / CD workflow: - I understand that pact publication / verification should be done in the CI step, then during CD we check whether it is possible to deploy a service using existing data from compatibility matrix (can-i-deploy) ? - In my project, the CD environments for non-PROD and PROD are completely separated, so do I need to have two separate Pact Broker instances and somehow synchronize them ? We could check compatibility only during non-PROD deployment, but PROD can contain different versions of applications which are possibly not compatible with the one deployed