If I receive a rejection 2 days after the interview does it mean they interviewer didn't like me at all?

I had two interviews were the interviewers seemed very sceptical from the very beginning and just going through the motions and not being interested in me at all. In both cases I received a rejection two days after the interview. Do big companies wait at least two days to send a rejection e-mail if they already know during the interview that they don't consider the candidate qualified enough?

If I receive a rejection 2 days after the interview does it mean they interviewer didn't like me at all?
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