It might have been easier for the interviewer to fill out his evaluation form with "Did not answer the provided questions" (or similar) rather than "Not interes

It might have been easier for the interviewer to fill out his evaluation form with "Did not answer the provided questions" (or similar) rather than "Not interested in working for us". HR might not have got the full story. Still weird that they'd make a point of saying he wasn't welcome to come back and try again.