The source – searchenginejournal.com
Google can send ranking signals to a new URL without a 301 redirect. During the weekly hangout, this was announced by John Mueller of Google.
He was asked if Google has any time limit to set up a 301 redirect before its absence starts to affect rankings.
John Mueller replied that Google does not have a specific time limit, but it can transmit ranking signals without the help of a 301 redirect.
For example, if the old content still exists and a copy is created at the new URL, then the two URLs will be treated as part of the same cluster. You have to choose the canonical URL between them.
Thus, if the content remains the same and if Google recognizes the new URL as the canonical version, then it can forward signals. But if the source of these signals is removed, then Google cannot forward ranking signals. If you delete a page and republish the same content to a new URL, you will lose all of its signals.