
The Alien Covenant Advent video shows these images when David mentions his experiments. Undeniably, we can see a facehugger in action in the stills.
Look at the images carefully, to be more precise, look at the back of the facehugger.
There are two tube-like/bone-like things connected to its back. What are these?
Was the facehugger controlled during the action?
These bone-like things are very similar to the structures that can be seen on/around Shaw’s face in the movie still:
Do the Advent video stills show Elizabeth?

I still wonder if the Juggernaught's cryo-chamber caused the mutation that was growing from Shaw's head?

Wow I find this post fascinating regarding the 2 bones in the back.
@cerulean blue, that would be pretty cool. But according to Advent, she most likely made it out of cryo intact.

I would also like to see the prop of Shaw but cannot find it anywhere!

I believe those are the facehugger legs pulled back in a dissection drawing to give room to show the tube going through the mouth extending past the lower jaw line into the throat Ati.

Ingeniero - First I had thought something similar then I asked myself: 'Does that facehugger have six pairs of legs?' So I don't know...

I think it was intentionally drawn to mess with Ati's mind!
They sort of look like molars.

dk - 'intentionally drawn to mess with Ati's mind' - That's an expensive hobby! :D