Connected bodies
 

Hi,
I'm trying to simulate two attached dfbi bodies moving togheter underwater. The bodies should share the surface at which they are connected beacuse no fluid is desired between them. Indeed this internal surface shall have the wright pressure (i.e. hydrostatic pressure) and no additional dynamic pressure is requested. The question is if two different bodies can share one boundary (wall) and, if the answer is yes, how.
Thank you.