Is an Isolated HQ able to support subordinates ?

[Green]

Not sure what 'drop one level for in command checks' refers to. I was under the impression that Isolation had no impact on Command Checks. Is this an undocumented feature?

Obviously the Morale for the HQ drops by one, which will increase the probability that it will Disrupt. But my understanding is that Command Checks should be unaffected simply by being Isolated.