Is there any delay between crawling a page by google and displaying of the ratings in rich snippet of the results in google?

[NEWCRAFT]

Is there any delay between crawling a page by google and displaying of the ratings in rich snippet of the results in google?

[smstv]

Best I can come up with is; Once you've marked up your site's content, Google will discover it the next time they crawl your site (although it may take some time for snippets to appear in search results, if they do choose to display rich snippets for your site). If you're marking up your content for rich snippets, you can let Gogole know. Google won't be able to individually reply to your message, but may use the information you supply to improve  detection and display of marked-up content.

Hope this is helpful

[NEWCRAFT]

yes of course you are right, but i'm looking for people who have experience with this delay and have any idea how long it usually takes to get the rich snippet displayed in the serp. And how Google determines which mark up's are displayed.