I had a similar situation/question. I knew an old coworker who was eagerly trying to get me on their team at another company. They said I had to apply and then they'd take it to their manager who was already on board with the idea.
So I did, at 10PM or so at night. And within a few minutes, got a rejection email.
To this day I wonder if someone clicked reject, or the system just autorejected me because of something it didn't like on my resume. Needless to say, I gave up on that idea.
Yep. They told me they(the team) don't know what happened, never saw it, and to apply again. I tried, but the system wouldn't allow it (it was one of those outsourced HR things, I forget the name).
It was more an exploratory thing, not some huge job opp, so it became more of a nuisance than it was worth. But it still left me curious how in the world said systems even work.
So I did, at 10PM or so at night. And within a few minutes, got a rejection email.
To this day I wonder if someone clicked reject, or the system just autorejected me because of something it didn't like on my resume. Needless to say, I gave up on that idea.