Looking at crossing Brahma and Chantecler

[cppeace]

I am looking at possibly crossing a White Chantecler rooster over Light Brahma and Dark Cornish hens. Both the Brahma and Cornish have pea combs. Chantecler has a Cushion comb. I'm unfamiliar with what comb his cross would throw. I know Rose is dominant and makes up part of the cushion comb and pea is semi-dominant.
Can anyone help me with what comb these mixes may throw? I tried using a calculator like I do for colors but didn't see an option t customize the comb.
Any help appreciated. I will be getting my chicks soon but will keep looking if I'll be throwing an off the wall comb. I already have my Brahma hens. So will just be getting the other breed to get the rooster in.

 

[Brahma Chicken5000]

Pea combs are just as dominant as rose combs.
If the cushion comb is a variant on the rose comb the offspring will have walnut combs.

 

[OhZark Biddies]

I had to look it up, but Cushion is basically a walnut comb plus another gene to make it smooth.

So rose x walnut = walnut

Comb calculator:
http://kippenjungle.nl/kruisingFlex...,C;RM;non-peacomb;;;;;,C;NVL;;;Single comb;;;

 

[cppeace]

thanks!