I just read both the prequel and the first one. So it’s still fresh in my mind. I remember, in the prequel, Moiraine and Siaun are there for the foretelling 20 years prior the first book. The foretelling says the dragon reborn is now on earth or something and from then on both of them vow to find him. It is stated that mat Perrin and Rand are about the same age so they are 19 at most on the first book and by the second they are twenty 20. Not only are they ta veren and that the blood of manetheren is strong but also Moiraine knows the prophecy and so does Lan so they both know it has to be one of the three since they match the age according to it. They seem young to me but never as young as teenagers. Maybe Egwene but I don’t remember anything about her age. Both her and the wisdom are going to become novices despite their ages because they are that strong. Despite Nynaeve being older than usual and egwene being so young. I just read it in the great hunt one of the aes sedai makes a comment on both their ages. They are different and strong. Oh my hahaha what a debate on their age. 👵