I currently have a site setup that, in addition to regular static pages, also has a WordPress blog. This results in my main site having a sitemap.xml file listing the basic pages and then a sitemap for the WordPress blog posts. I understand that I could create a sitemap_index file and point to each of the sitemap files, but would it be possible to just link to the WordPress sitemap from my regular sitemap file?
For instance:
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
<url>
<loc>https://www.example.com/wordpress_sitemap.xml</loc>
<changefreq>weekly</changefreq>
<lastmod>2013-04-30T14:10:03+00:00</lastmod>
<priority>1.0</priority>
</url>