The TFA novel was written by Alan Dean Foster, who also wrote this (Ctrl+F “resurgence”) interesting piece of fanfiction, so I’d take his ideas about the sequel trilogy with something of a grain of salt. Various parts of the TFA novel have also been retconned since - it suffers a lot from ADF not being privy to where the later movies were going. I don’t think TLJ or TROS were written with the idea in mind that Rey ever downloaded Ben’s training or what have you, though to some extent the dyad is another take on a similar concept.