It's known (from the articles on Smogon, and the first few posts) that when continuing a game, the RNG and IRNG are both seeded at the moment you choose "continue", and that when starting a new game, the IRNG is seeded at the moment the TV cutscene ends. My question is, when starting a new game, is the "ordinary" RNG also seeded to the same value as the IRNG? My guess is yes, but it's rather hard to check (the easiest way would be by measuring the delay and then IV-checking your starter, but that's rather tricky to do until much later in the game). This is kind-of important if the two do have the same seed, as it would allow an (unreliable) method of deducing a person's SID without needing any pre-existing shiny Pokémon at all.