Cauldron SIGMA

In which someone says that each machine can be produced at each cauldron

I have another theory: the only example we have is the sigma bellowback, XI ovverdides

XI was the only known cauldron that was attacked by eclipse.

Maybe GAIA deactivetaed XI and temporarely produce XI at SIGMA while there is XI 2.0 in construction somewhere.

Also the attack after completing XI is probably by GAIA.

Bc there was a Fire Bellowback at Cauldron SIGMA but we got the override at Cauldron XI. So that made me wonder if one Machine can be produced in multiple Cauldrons