Theory:Doctor Who audio discontinuity and plot holes/Neverland

In the first episode everything points to the planet in the Antiverse being a TARDIS... Rassilon's TARDIS, really. It's the only static object in the chaos of Anti-Time, it's dimensionally transcendental, and it has a central column that projects a hologram of Rassilon.

However, the second episode reveals the whole thing to be a hoax. Sentris and her fellow Neverpeople set up the hologram in order to get an Anti-Time bomb to Gallifrey, disguised as Rassilon's casket.

So is the TARDIS in the Antiverse real or not? It seems far too out of the ordinary from the rest of the universe to have been built by the Neverpeople. But if that's the case, how did it actually get there?