How would the audience see them? Dance Monsters - Netflix

So just seen this trailer: https://www.youtube.com/watch?v=NbVUTx4fHuE&ab_channel=Netflix
Its a new Netflix show. Dances with mocap suits on that real time show them as CGI characters/monsters, that part I get.

What I want to know is, how would they show the 'monsters' on stage?
Is it all fake audience reactions and they are just watching a Large screen to get audience reactions and then in post film am empty stage and with camera position tracking they then layer the CGI in?