Like I said, we need a clear methodology. A few responses scattered throughout the tread is completely different from a single post that lists from start to finish all activity and steps you have done that you believe might be relevant, and list any possibilities that you have considered and have eliminated. Right now the only theory we have now is a scheduled notification, with very slight possibility that you plugged the Switch into the TV to play a game and didn't use a USB controller. Here's the thing: the internet is a big place, full of people ranging from competent to very very stupid. We only have your word. That being said, this issue is only as big as you make it. I'm invested solely because I'm curious and I believe you're withholding some important details, which others may be terrified of the prospect of their Switch updating automatically and taking their very slim chance of homebrew away.