>>29461433You should keep in mind that this was around the time when various Game Freak members just suddenly began posting all types of pieces of development information, like
>BW protagonists were envisioned to be around the age of 16 during their development>OP tweet>Gen I rival was called ギャラ夫 (Gyarao; Gyara Guy) by the staff during the development of Red and Green because he owned a GyaradosAnd a bunch of other little bits of info. I remember more than just the OP tweet was taken down. Besides, it was widely accepted before this tweet what the chronology of the games were.
Gen I took place at the same time as Gen III because of the Ruby and Sapphire quest in FRLG that connects Kanto to Hoenn
Gen II took place 3 years after Gen I because of numerous pieces of in-game dialogue saying so
Gen IV takes place at the same time as Gen II because of references to recent events in Johto, like the Red Gyarados
Black/White take place after Gen II/IV because the Team Rocket grunt with the accent from GSC/HGSS moved to Unova and started a family
Black 2/White 2 taking place 2 years after Black/White is said numerous times in game
I haven't finished X/Y yet, so I don't know about it. But this was widely accepted information.