Aladin MVP A46 assembly question

Hello,

I bought Aladin MVP A46 Clear hookah but I’m really not sure about one part of the assembly

Uploaded 5 photos where I believe the part is going in - connection of the plate and the cup. My concern is between the bottom half under the plate and the hookah pipe there is not thread or rubber so won’t it affect the draw as there might be air?

Might be a stupid question so apologies if it is.

Thank you in advance.