Yes, a million times yes. Large companies are especially adamant about this, but any good HR department/person that's trained properly will insist all communic

Yes, a million times yes. Large companies are especially adamant about this, but any good HR department/person that's trained properly will insist all communications with candidates goes through an HR representative before and after interviews, and any feedback to the candidate will be utterly generic and non-specific. Please note, "good" means they reduce the chance of the company getting sued.