Google very slow to process redirects?

[alexp]

I'm noticing this on a couple of websites.
20-page local website was redirected with both URL to URL redirects on server, and domain move in Search Console. 3 months later some pages are still showing in search on old domain.
Large ecom site - the main category was redirected to new URL 2 months ago, and we just discovered some versions of the old page still indexed when doing a site:Old-URL search. We submitted those URLs for removal in GSC, they were removed fast, one week later the category page is coming up in search. Incidentally, this page was hurting badly (still is), and we're still looking for the solution. The old still-indexed URLs seemed to be part of the problem.

Anyone else noticing this?

 

[Corey]

Charles Taylor mentioned on Fight Club that Google's URL Removal Tool will quickly hide URLs from search results but does not actually remove the URLs from Google's index. It hides the URLs from search results for about 180 days, during which time they will not appear in Google Search, but remain in Google's index. After the temporary removal period expires, if the underlying content still exists and is accessible to Googlebot, the URLs can reappear in search results.