rss2_comments_ns
Action Hook: Fires at the end of the RSS root to add namespaces.
Source: wp-includes/feed-rss2-comments.php:31
commentsrss2_head
Action Hook: Fires at the end of the RSS2 comment feed header.
Source: wp-includes/feed-rss2-comments.php:76
commentrss2_item
Action Hook: Fires at the end of each RSS2 comment feed item.
Source: wp-includes/feed-rss2-comments.php:118