Throughout the episode (S01E12), Tony encounters a beautiful Italian woman whom he believes is his next door neighbor's maid while they are away. We later learn at the end of the episode, that the woman, Isabella, was a hallucination created by the combo of Lithium and Prozac that Tony is prescribed.
My question is this: How exactly does the Isabella hallucination work? Is Tony talking to himself while nobody is actually there similar to Tyler Durden in Fight Club? Tony takes Isabella out to lunch in an Italian restaurant. Is he simply sitting by himself talking to an empty chair? Does this hallucination work differently than this? I feel like I missed something.