Infinite Scroll repeats my posts

Hi!

I have a custom page-template and in that template I am running two loops.
The first one showing the latest 6 posts with featured image, and then after that the rest of the posts showing the title.

Everything is working as I want to, execpt for when it comes to adding a infinite scroll to this page. I get it to work, but the posts gets repeated down the page. I want the first 6 posts to stay at the top showing the thumbnails, and then the list of posts showing only the title grows as I scroll down.

I have tried the do not duplicate link, but cant get that to work.

Here is the code I use, ( sorry if the code is messy, im a newbie 🙁 )

<?php
$temp = $wp_query;
$wp_query = null;
$wp_query = new WP_Query();
$wp_query->query('showposts=6&post_type=post'.'&paged='.$paged); 

while ($wp_query->have_posts()) : $wp_query->the_post();
?>
<?php get_template_part('templates/featured'); ?>

<?php endwhile; ?>

<?php
// Second query arguments.
$args2 = array(
  'offset' => '6',
  'post_type' => 'post',
  );

$query2 = new WP_Query( $args2 );
if ( $query2->have_posts() ) {
  echo '<ul class="more-posts">';
  while ( $query2->have_posts() ) {
    $query2->the_post();
    ?>

    <?php get_template_part('templates/content'); ?>
    <?php
  }
  echo '</ul>';
}
// Restore original post data.
wp_reset_postdata();
?>
<?php
$wp_query = null;
  $wp_query = $temp;  // Reset
  ?>

Hope someone can help me out!