How Long Does it Take for Rel Canonical to De-Index / Re-Index a Page?

[Travis-W]

Hi Mozzers,

We have 2 e-commerce websites, Website A and Website B, sharing thousands of pages with duplicate product descriptions.

Currently only the product pages on Website B are indexing, and we want Website A indexed instead.

We added the rel canonical tag on each of  Website B's product pages with a link towards the matching product on Page A.

How long until Website B gets de-indexed and Website A gets indexed instead?

Did we add the rel canonical tag correctly?

Thanks!

[EGOL]

We did rel=canonical on a few hundred pages and it took google months to follow the instruction.  These were not trivial pages buried deep in a website.  They were PR4 pages with lots of traffic.  The results in the end were as expected but it took a few months to happen.

[Travis-W]

Is there anything I can do to speed up the process? I noticed that since adding the tag yesterday (I know it is still extremely early), Google has continued to index more of these pages on Website B.