MAYBE SPOILERS! The one who came before

Okay so I’ve done quite a few rereads of the series since the OS release, and have read quite a few theories in this subreddit that I love! One of the theories is that Naolin (the one who came before/Tairns previous rider that we believe died saving Brennan) is actually still alive and possibly Venin.

My question is if Naolin is alive, what would happen between Violet, Tairn and him? Violet was the first ever rider to have two dragons, but there’s never been a dragon with two riders (as far as we know).

I would assume that if he is in fact alive and Venin, the Veninism (?) is the reason they are no longer in contact mentally, but then there’s Xaden and Sgaeyl there to prove me wrong. Unless it’s a willing separation, like psycho Barlow, except Naolin obviously didn’t kill Tairn. Maybe he just decided to cut his mental tie?

Then again, what would happen if they all met? Technically this would all mean that Tairns previous rider is back, and I’m just confused and interested as to how that would affect their relationships. We know that riders are with their dragons until death, and Naolin is not (in this theory). How would it work having two riders of the same dragon alive and coexisting?

How would Tairn react? Obviously I don’t think Tairn would just go, “Okay bye Violet my man is back, you have Andarna even though she can’t bear you as a rider so you’re not alone” and ditch her. He would definitely feel a lot of emotions and not all positive, and Violet would be confused and concerned about losing Tairn.

I would love to know what all of your thoughts are on this!