Load balance and octo cascade of the videobridge

I would like to clarify some doubts about the operation of the load balance and cascaded bridges octo of the videobridge.

In the post below, we see that the load balance is for conferences and not for users. What really happened in my tests, where I overloaded a server with only one conference and the others remained unused.

In a quick test following the octo documentation (which I understand creates cascade bridges between regions), I seem to have connected one user in the “eu-central” region and another in the “eu-west” region.
Does this configuration really create a bridge between jvbs from different regions servers?

If so, with both configurations successfully done, is there any chance that only one region will cascade between the subnets?

someone who can help?