Tower of Zot controller.

[Cilia]

And where was this "explicitly stated" or otherwise implied?
I see how they could potentially do that, but it seems odd to broadcast Anima through some towers while summoning anither primal to defend it. I presume this also means Anima itself must have some sort of physical link to Varis otherwise this seems contrived.as Yasayle was the only primal to really require a physical body, discounting Zenos stealing Shinryu.

Fandaniel / Amon tells us during the "dinner" scene with Zenos.