I just caught an interesting detail whilst rewatching the video. It was only for the briefest of moments, but I noticed that the Mew distributor had access to Restore Points unlike normal Virtual Console versions of the game, and as soon as my trade was completed he used the restore point. This could mean that they were in fact using a special version of Red or Blue VC, or there's actually something hidden in the VC release that may re-enable Restore Point usage, as this is still a VC
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