If a Google employee gives you negative feedback to the hiring committee, will there be no chance of being hired regardless of how well you did the interviews?
Did you hack that employee?
No, he porked that employee
Yes, don't mess with us ๐๐
I gave a referral to someone and my referral was "Don't hire this person, they're a drug addict and a sociopath." They still got hired. So, I'd say, it depends - referrals are just weighed with everything else.
Is that employee one of your interviewers?
Nope