This is a screenshot of the output grabbing the name of a portal and each of its child objects, in order. There’s more ways to analyze portals in more detail. If you do comment here and I’ll do my best to edit this into a more full guide. This is just a start.
You can detect the collider of an instance portal using
OnTriggerEnter(), and you can filter by checking the name for
PortalInternalDynamic. You can use this to move the transform of the portal, among other things.