Get next and last post in Wordpress, using first image from post (catch_that_image) instead of a featured image, styled as background-image for container-less half grid.

Wordpress: Next and Last Post

<!-- Single Next/Last Post nav
================================================== -->
<section class="sect-posts post-nav cf">

<?php $prevPost = get_previous_post(true);
	if($prevPost) {
		$args = array(
			'posts_per_page' => 1,
			'include' => $prevPost->ID
		);
	$prevPost = get_posts($args);
		foreach ($prevPost as $post) {
	setup_postdata($post);
?>
		<article class="g-6 cols"  style="background-image:url('<?php echo catch_that_image($page->ID, 'fullsize') ?>');">
			<a href="<? the_permalink()?>" style="background-image:url('<?php echo catch_that_image($page->ID, 'fullsize') ?>');">    
			  	<div class="content"> 
			  		<!--<small class="meta-date"><?php the_time('F j, Y'); ?></small>-->
			  		<small class="meta-date">Last Post</small>
			  		<hr class="sep"/>
			  		<h3><?php the_title_shorten(45,'...'); ?></h3>
			  	</div>
			  	<div class="overlay"></div>	
			  </a>  
			</article>
			<?php
	wp_reset_postdata();
	} //end foreach
	} // end if

	$nextPost = get_next_post(true);
		if($nextPost) {
			$args = array(
				'posts_per_page' => 1,
				'include' => $nextPost->ID
	);
	$nextPost = get_posts($args);
		foreach ($nextPost as $post) {
	setup_postdata($post);
?>
		<article class="g-6 cols"  style="background-image:url('<?php echo catch_that_image() ?>');">
			<a href="<? the_permalink()?>" style="background-image:url('<?php echo catch_that_image() ?>');">    
			  	<div class="content"> 
			  		<!--<small class="meta-date"><?php the_time('F j, Y'); ?></small>-->
			  		<small class="meta-date">Next Post</small>
			  		<hr class="sep"/>
			  		<h3><?php the_title_shorten(45,'...'); ?></h3>
			  	</div>
			  	<div class="overlay"></div>	
			  </a>  
			</article>
			    <?php
wp_reset_postdata();
} //end foreach
} // end if
?>

</section><!-- .navigation -->

<?php endwhile; // End the loop ?>