A hiring manager response creates momentum, but it does not guarantee the candidate stays interested, prepared, or responsive. The submission earned attention. Engagement protects what happens next.
A candidate can be excited during the recruiter call, submitted to the client, and then slowly detach while everyone waits for feedback. They may take another interview. They may accept a faster offer. They may start doubting the opportunity because nobody has explained what is happening.
That is why candidate engagement belongs next to candidate presentation and candidate readiness. The recruiter has to help the manager believe the candidate is worth time, then help the candidate stay warm enough to convert that interest into an interview, offer, start, and placement.