>>57970374
What was up with BDSP - PLA? Those remakes really piss me off and we we got better.
>Charon and some Frontier Brains have ancestors
>Volo's main Pokémon, Togepi, was once given to the main character by Cynthia, who also uses Togekiss
>The space-time rift on Mt. Coronet is similar to the black rift on Mt. Coronet depicted in the official Platinum illustration, “The Torn World." https://archives.bulbagarden.net/wiki/File:Torn_World.png

There are some other references in the Japanese that I'm not sure if make sense in English, like the names of the Miss Fortune sisters, Coin(オウメ Oume), Charm (オマツ Omatsu), and Clover (オタケ Otake), being shared by regular trainers in the Battle Frontier (Pic related) https://wiki.xn--rckteqa2e.com/wiki/バトルフロンティアのトレーナー一覧_(第四世代), or Rowan having a sweet tooth for Rage Candy Bars in Platinum further connecting Kamado's birthplace being in Johto (he takes on a Kansai dialect during some parts of the game.)
And in BW
>Cynthia mentions watching a trainer defeat Giratina, which she only does in Platinum