Sure, that's a valid point. I suppose the best time to do it would be while arranging the in-person/phone interview. The interviewers will (hopefully!) be told

Sure, that's a valid point. I suppose the best time to do it would be while arranging the in-person/phone interview. The interviewers will (hopefully!) be told what time the interview is, so this information could be forwarded at the same time. And if the HR team can't ensure the interviewers have this extremely relevant piece of information? That's probably a signal about how effectively that company handles communication.