DX Netops Performance Management/DX Netops VNA 21.2.2 and later includes the ability to monitor and report on control connections from VManage.
Release : 21.2
Component : Virtual Network Assurance For CA Performance Management
These are denoted by a protocol type of dtls in the Tunnels inventory list
You can add views to the tunnels context page to configure views for the related metrics.
For the metrics supported by the control connections see:
There are no context pages specific to the control connections at the time this article was written