<p>do alumni interviewers talk to each other? like if i met one on a plane and talked to him/her, but we had a not-so-great conversation, what are the chances that he/she would report that to the school or to the interviewer who actually interviewed me?</p>
<p>Alumni interviews aren't spies for the college. If you are so fortunate to sit next to an alumni interviewer, it would simply be a nice chance to learn more about Harvard. Unless you did something like announced that you were a mass murderer or had hacked into your school's computer to change your report card grades, the alum wouldn't be talking to the admissions office about you.</p>