diff --git a/wp-includes/block-editor.php b/wp-includes/block-editor.php
index c5cb180117..9fe559fc41 100644
--- a/wp-includes/block-editor.php
+++ b/wp-includes/block-editor.php
@@ -396,6 +396,23 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 
 	$editor_settings['localAutosaveInterval'] = 15;
 
+	$editor_settings['__experimentalDiscussionSettings'] = array(
+		'commentOrder'        => get_option( 'comment_order' ),
+		'commentsPerPage'     => get_option( 'comments_per_page' ),
+		'defaultCommentsPage' => get_option( 'default_comments_page' ),
+		'pageComments'        => get_option( 'page_comments' ),
+		'threadComments'      => get_option( 'thread_comments' ),
+		'threadCommentsDepth' => get_option( 'thread_comments_depth' ),
+		'avatarURL'           => get_avatar_url(
+			'',
+			array(
+				'size'          => 96,
+				'force_default' => true,
+				'default'       => get_option( 'avatar_default' ),
+			)
+		),
+	);
+
 	/**
 	 * Filters the settings to pass to the block editor for all editor type.
 	 *
diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 45e36fc1dc..72f0198626 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -1358,3 +1358,96 @@ function _wp_multiple_block_styles( $metadata ) {
 	return $metadata;
 }
 add_filter( 'block_type_metadata', '_wp_multiple_block_styles' );
+
+/**
+ * Helper function that constructs a comment query vars array from the passed
+ * block properties.
+ *
+ * It's used with the Comment Query Loop inner blocks.
+ *
+ * @since 6.0.0
+ *
+ * @param WP_Block $block Block instance.
+ *
+ * @return array Returns the comment query parameters to use with the
+ * WP_Comment_Query constructor.
+ */
+function build_comment_query_vars_from_block( $block ) {
+
+	$comment_args = array(
+		'orderby'                   => 'comment_date_gmt',
+		'order'                     => 'ASC',
+		'status'                    => 'approve',
+		'no_found_rows'             => false,
+		'update_comment_meta_cache' => false, // We lazy-load comment meta for performance.
+	);
+
+	if ( ! empty( $block->context['postId'] ) ) {
+		$comment_args['post_id'] = (int) $block->context['postId'];
+	}
+
+	if ( get_option( 'thread_comments' ) ) {
+		$comment_args['hierarchical'] = 'threaded';
+	} else {
+		$comment_args['hierarchical'] = false;
+	}
+
+	$per_page     = get_option( 'comments_per_page' );
+	$default_page = get_option( 'default_comments_page' );
+
+	if ( $per_page > 0 ) {
+		$comment_args['number'] = $per_page;
+
+		$page = (int) get_query_var( 'cpage' );
+		if ( $page ) {
+			$comment_args['paged'] = $page;
+		} elseif ( 'oldest' === $default_page ) {
+			$comment_args['paged'] = 1;
+		} elseif ( 'newest' === $default_page ) {
+			$comment_args['paged'] = (int) ( new WP_Comment_Query( $comment_args ) )->max_num_pages;
+		}
+		// Set the `cpage` query var to ensure the previous and next pagination links are correct
+		// when inheriting the Discussion Settings.
+		if ( 0 === $page && isset( $comment_args['paged'] ) && $comment_args['paged'] > 0 ) {
+			set_query_var( 'cpage', $comment_args['paged'] );
+		}
+	}
+
+	return $comment_args;
+}
+
+/**
+ * Helper function that returns the proper pagination arrow html for
+ * `CommentsPaginationNext` and `CommentsPaginationPrevious` blocks based on the
+ * provided `paginationArrow` from `CommentsPagination` context.
+ *
+ * It's used in CommentsPaginationNext and CommentsPaginationPrevious blocks.
+ *
+ * @since 6.0.0
+ *
+ * @param WP_Block $block           Block instance.
+ * @param string   $pagination_type Type of the arrow we will be rendering.
+ *                                  Default 'next'. Accepts 'next' or 'previous'.
+ *
+ * @return string|null Returns the constructed WP_Query arguments.
+ */
+function get_comments_pagination_arrow( $block, $pagination_type = 'next' ) {
+	$arrow_map = array(
+		'none'    => '',
+		'arrow'   => array(
+			'next'     => '→',
+			'previous' => '←',
+		),
+		'chevron' => array(
+			'next'     => '»',
+			'previous' => '«',
+		),
+	);
+	if ( ! empty( $block->context['comments/paginationArrow'] ) && ! empty( $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ] ) ) {
+		$arrow_attribute = $block->context['comments/paginationArrow'];
+		$arrow           = $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ];
+		$arrow_classes   = "wp-block-comments-pagination-$pagination_type-arrow is-arrow-$arrow_attribute";
+		return "<span class='$arrow_classes'>$arrow</span>";
+	}
+	return null;
+}
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
index 6e2daa829a..c2d9e87635 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
@@ -1196,7 +1196,8 @@ class WP_REST_Comments_Controller extends WP_REST_Controller {
 			$rest_url = add_query_arg( $args, rest_url( $this->namespace . '/' . $this->rest_base ) );
 
 			$links['children'] = array(
-				'href' => $rest_url,
+				'href'     => $rest_url,
+				'embedded' => true,
 			);
 		}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index fd1a6e1631..2bb6e23f62 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-53137';
+$wp_version = '6.0-alpha-53138';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.