LinkedIn is designed to protect user privacy, so you won’t receive a formal notification if someone blocks you. However, you can use several investigative methods to confirm your status, primarily by testing their profile link while logged in versus logged out. The Direct Link Test
The best way to avoid needing the "blocked link" test is to never get blocked in the first place. how to know if you are blocked on linkedin link
If you were 1st‑degree connections, the “Connected” badge on their profile disappears. The button changes from “Message” back to “Connect” or “Follow.” LinkedIn is designed to protect user privacy, so
In a post, comment, or article, type @ followed by their name. type @ followed by their name.