Interaction between multiple AR objects

Hello, I am new to vuforia and am very curious about a few things. I was hoping you good people could help me learn a few things.

1) Can multiple markers interact with each other?

    Ex1: A Street Fighter type game where each marker represents an AR character. Key presses on either device are translated into moves for their corrosponding AR character(left, right, kick, punch, etc). Like any other fighting game contact results in HP loss. Is it possible to achieve this in real time between 2 devices using Vuforia?

   Ex2: One marker is placed down and an entire chess board and pieces are generated. Is it possible to move these pieces individually without the need for additional markers, and can the pieces interact? To achieve this will each move need to be sent to a central hub for the data to then be transfered to each device? 

My question pretty much boils down to how to accomplish true multiplayer  interaction in either real time or turn based where all information shared between then players is synced correctly. I placed this in the general forum because the subject matter fits for all but I will personally be using Unity for my future projects.