pre_get_posts for two loops on same page

Question

Have a look at WP_Query when you need to loop through posts.

<?php 
  $args = array( 
    'post_type' => 'post',
    'post_status' => 'publish',
    'posts_per_page' => -1,
    'post__not_in' => array(),
    'order' => 'DESC',
  );
  $the_query = new WP_Query($args);

  // Show the first 3 posts
  while($the_query->have_posts()) { $the_query->the_post(); 
    echo '<h2>'.get_the_title().'</h2>';

    // Have we shown 3 yet? Break then. (current_post counter stats at 0)
    if( $the_query->current_post == 2 ) { break; }
  }

  // Continue the loop where we left off
  while($the_query->have_posts()) { $the_query->the_post(); 
    echo '<h2>'.get_the_title().'</h2>';
  }

  wp_reset_postdata();
?>