Kind of wish you wouldn't use real network names in your examples... because it skews what the actual picture might be and people can easily mis-understand what you're saying. Here, for example, you're basically implying the networks being discussed or other Fullscreen sub-networks could be 3rd tier... which they are not. Out of consideration you should consider using "Network A", "Network B" or some other way of describing your (completely off-topic) scenarios rather than pulling actual networks into an example where it's not an accurate representation. Would be appreciated.
@Everyone
Just for clarity sake for anyone reading...
Every Fullscreen sub-network is directly under Fullscreen. Creator X and otherwise. There are no 3rd tier or "sub-sub-networks" at this time.