Quote Originally Posted by fire_of_avalon
I think the only connection there is the fact that they both have the ability to weild formidable magic.
Also, the powers that Rinoa wields include the powers that Edea got from Ultimecia. They'll go full circle - sometime before Rinoa dies, she'll pass on her abilities to someone else, and so on down through the generations, till eventually Ultimecia inherits them. This is what is stated in the game, that the future sorceress is "many generations ahead of our time" where "none of us can...exist".
R=U is totally dependent on the idea - never even hinted at in the game - that sorceresses can overcome the age-barrier. The only evidence for this is the fact that Edea still looks pretty at the end; however, this is an FF - everyone looks pretty even if they've just been through war and hell, shot, stabbed and frazzled with magic. Nothing ever messes up their hair and skin, including age. See Cid's shiny locks in the ending FMV if you desire proof