Congratulations to
runehero123
He figured out how SNS works in Banjo-Kazooie few years ago. He even menaged to emulate Cold Swap by hacking. He figured out that Banjo-Kazooie is looking for flags during boot-up. He confirmed that there aren't SNS flags in Donkey Kong 64 and Banjo-Tooie. This interview confirmed everything what our hero already found.