5 interview rounds at an MNC — does a weaker final round mean rejection?

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I recently interviewed with an MNC for a non-developer role and went through 5 rounds:

1. Aptitude test — pen & paper, negative marking

2. Technical Round 1 — 45+ minutes

3. GD

4. Video interview — ~30 minutes

5. Video interview — ~30 minutes

I felt pretty good about the earlier rounds, especially the technical round and first video interview.

However, I felt my last interview was average compared to my previous rounds. I answered the questions, but I don't feel I performed as strongly as I did earlier.

Now I'm overthinking and feeling like I might have been rejected.

For people who have gone through 5+ rounds at an MNC, especially for non-developer roles:

- Does going through this many rounds usually mean you're seriously shortlisted?

- Has anyone had a mediocre final round and still received an offer?

- How long did it take to get your result?

- Should I be worried about the final round being weaker than the previous ones?

Would appreciate honest experiences.