You have 2 projects in two folders. blog1 with your htaccess and blog2 with other htaccess. You should have set virtual host with domain like website.com going to directory /var/www/blog1 right ? So when u type website.com/blog2 system will redirect u to documentRoot website.com -> blog1 and doesn't matter what u have in blog2 dir and htacces.
You can create subdomain in vhost to reirect if u type blog1.website.com or website.com/blog1 or you can set htacces in blog1 and when someone type website.com/blog2 redirect to other folder blog2
without subdomain
RewriteCond %{HTTP_HOST} ^[^.]+.[^.]+$ RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
with subdomain
RewriteCond %{HTTP_HOST} ^www.([^.]+.[^.]+.[^.]+)$ [NC] RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]