the timing thing is real. it's not that they think you're AI specifically, it's that instant follow-ups pattern-match to automation in people's heads. the delay signals you actually looked at their profile before reaching out. 2-3 days feels right, but the real unlock is making the message reference something that couldn't have been templated — a specific post they wrote, a hiring signal from their job board, something that proves the gap between connect and message was spent researching