I need an automation like this: when an item is created in board A, the item gets duplicated and moved to board B. I want both items’s (item in board A, duplicate in board B) to be mirrored, so that if I change status on board B, the status gets changed in board A as well (or viceversa).
Yes. Go to the automations of board A and search “another board” and choose the automation that says “When status changes to something create an item in another board and connect them in the selected board”