WordPress snippet: show connected items, in this case "reviews".

content-connected-reviews.php

<?php

			$connected_reviews = new WP_Query( array( 
				'connected_type' => 'nice_stuff',
				'connected_items' => get_queried_object(),
				'nopaging' => true,
			) );
			
			if ( is_singular( 'portfolio_item' ) && $connected_reviews->have_posts() ) : ?>
				<?php while ( $connected_reviews->have_posts() ) : $connected_reviews->the_post();
					// Reviews
					$reviewer_name = get_post_meta($post->ID, 'reviewer_name', true);
					$reviewer_link = get_post_meta($post->ID, 'reviewer_link', true);
					$reviewer_description = get_post_meta($post->ID, 'reviewer_description', true);
				?>
			<?php the_title(); ?>
				<?php endwhile; ?>
				<?php wp_reset_postdata(); ?>
	<?php endif; // have_posts ?>
	<?php // is_ singular ?>