LinkedIn does not notify the person that you unblocked them, but they may see you in "Who Viewed My Profile" if you visit their page during this window.
If you have LinkedIn Premium Career or Recruiter, you can bypass the 48-hour wait by with that person (messages, connection requests, and profile views). Go to “Settings & Privacy” → “Data Privacy” → “Manage your off-LinkedIn data” → Request deletion of all activity with [Name]. This resets the relationship to “stranger” status, and the block button reappears in ~2 hours. This is an undocumented feature—LinkedIn support will never tell you about it. LinkedIn does not notify the person that you
It stops users from "cycling" blocks—repeatedly unblocking someone just to send a message or view their recent activity, then quickly re-blocking them to avoid a response. This resets the relationship to “stranger” status, and
to hide specific sections from non-connections. to hide specific sections from non-connections
to see if they've started following your updates.