How to Pollinate Gongora?

[HumbCa]

Hello, thanks for helping me out.
I have a nice Gongora that has recently opened, I'm trying to hand pollinate it.
I can't seem to find the usual structures for pollination when I compare it to a Cattleya or Oncidium. I'm at complete loss about pollinating this one.
I found the pollen, then found the following diagram, which shows where the pollen is located and all other parts of the Gongora flower:
Vegetative and floral morphology of Gongora Ruiz & Pav. A-C. Adaxial... | Download Scientific Diagram
Then I found the following diagram, which implies there should be a surface similar to a stigma (called "pollinarium") right behind the pollen:
Pollination of Gongora. (a) Bee gets a toboggan-like ride down the... | Download Scientific Diagram
I downloaded and corrected the image:

I can't really find said pollinarium, the flower has a smooth toboggan down to the pollen, this is confusing.
I will appreciate any pointers about pollinating my gongora.
Thanks