Redirection conflict?

Hello, wondering if you might know why this redirect isn’t working.

These feed URLs
https://calnewport.com/feed
https://calnewport.com/blog/feed

should be redirecting to this
https:/feeds.feedburner.com/StudyHacks

We added the redirect code to the htaccess file:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^calnewport.com/feed [NC,OR]
RewriteCond %{HTTP_HOST} ^calnewport.com/feed/blog [NC]
RewriteRule ^(.*)$ https://feeds.feedburner.com/StudyHacks/$1 [L,R=301,NC]

We also have the Redirection plugin for some important page redirects and for regex for the old blog path to the new blog one so it’s important to keep that active.

It seems that the redirection plugin could be conflicting with the htaccess redirect??

Thoughts?

TIA!