About two years ago the Fedora Engineering team merged with the CentOS Engineering team to form what is now called the Community Platform Engineering (CPE) team. For the team members, the day to day work did not change much.
The members working on Fedora are still fully dedicated to work on the Fedora Project, and those working on CentOS are still fully dedicated to CentOS. On both projects its members are involved in infrastructure, release engineering, and design. However, it brought the two infrastructures and teams closer to each other, allowing for more collaboration between them.