Answer:
Let me give you with these examples that might help you I guess:
Unprofessional HR Behavior: When you had an interview and a few days later you made a call to check back to know the feedback. But the hiring manager behaved very roughly and you didn’t even know why.
Semi-Professional HR Behavior: When you had an interview and a few days later you made a call to check back to know the feedback. But the hiring manager passively denied you.
Professional HR Behavior: When you had an interview and a few days later you got an email with regret that you did well but they find a better candidate than you. They were so proactive that within a few days you get your result. You didn’t have to follow up.
Hope this helps c;