Long ago, Blogger blog owners would publish a blog as part of an existing website.
With the website published as "www.mydomain.com", they would create a website subdirectory "www.mydomain.com/myblog", and publish the blog there.
The option to publish a blog as "www.mydomain.com/myblog" required an externally maintained domain / website - and the Blogger feature "FTP Publishing". In 2010, Blogger, with many man hours spent fixing a constant stream of problems, retired "FTP Publishing", in favour of "Custom Domain Publishing".
Custom Domain Publishing, like FTP Publishing, lets us publish our Blogger blogs to non BlogSpot URLs.
Unlike an FTP published blog, a custom domain published blog requires a separate subdomain for each different blog. If a non Blogger website is hosted as "www.mydomain.com", a Blogger blog can only be published to "blog.mydomain.com" - and "www.mydomain.com/blog" became an impossibility.
Last year, Blogger introduced Custom Redirects, as part of the "Search Preferences" feature. Now, once again, a Blogger blog can be addressed as "www.mydomain.com/myblog", when hosted as "www.mydomain.com" - though a non Blogger website (if one exists) cannot be directly hosted as "www.mydomain.com", simultaneously.
It may be possible, however, to host an externally published website as "site.mydomain.com", and a Blogger blog as "www.mydomain.com" - and use the Blogger "Missing Files Host" feature to locate website pages, dynamically, in "site.mydomain.com". There may be hope, for people who declined to migrate their FTP Published blogs, in 2009 - and who now have static "blogs" as frozen pages in their external websites.
An Important Update
If you did not use a Blogger / Google account when you Followed this blog, years ago, you are probably not Following now . During the past...