As far as I know, I don't think you get notified if you're redirected like you do in ToS.
Wait, we can analyze the info we have currently,
We have Luthon saying no one visited Fuji, but Beta said he did. That's already a contradiction. Meaning either a bus drive or a redirect took place. Or one of them is lying.
Light claimed that he can know if someone attempted a kill on him, and Fuji says that kills fail on him. I mean fuji can have some sort of immunity, but Light saying he knows if a kill was attempted is kinda confusing. I mean, he can have a passive that lets him know if someone visits him, but a passive that lets him know if a negative action was done on him? That's kinda fishy.
Lastly, Lanji is a miller and knows that Iva is in the game. A character does come to mind for me on who he could be.
@Flower were you a miller?