As Al pointed out:

Christieara, Chtra. (Aer. x Asctm. x V.)
Ronnyara Rnya. (Aer. x Asctm. x V. x Rhy)

So a cross of the two intergenerics would still only contain only Aer,
Asctm, V, and Rhy - nothing more and nothing less. So wouldn't Chtra. X
Rnya. still be Rnya.? Similar to how Dtps. X Phal. is still considered
Dtps?

Cheers,
Xi