Enhanced Linked Mode between Management vCenters in a SDDC managed environment is no longer supported.
VMware Cloud Foundation 4.x
VMware Cloud Foundation 5.x
Starting in VMware Cloud Foundation 4.5, the feature to join multiple VMware Cloud Foundation instances to the same vCenter Single Sign-On domain was deprecated.
Starting in VMware Cloud Foundation 4.5, the feature to join multiple VMware Cloud Foundation instances to the same vCenter Single Sign-On domain was deprecated.
Existing environments in this configuration are still supported.