post-object-output.php

<?php
$post_object = get_field('field');
if($post_object) :
    $post = $post_object;
    // Overwrite $post
    setup_postdata( $post ); ?>
    <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
    <?php
    // Reset $post so the rest of the page works
    wp_reset_postdata();
endif;?>