Starter for creating a left / right independent columns.

right-left-flexible-content.php

<?php
// Two Column Repeater to hold Left / Right Flexible Content Fields
if( have_rows('two_col_row') ): while ( have_rows('two_col_row') ) : the_row(); ?>

  <?php 
  // left col flexible content
  while(has_sub_field("left_column")): ?>
  	<?php if(get_row_layout() == "body_copy"): // layout: Content ?>
      <?php the_sub_field('title'); ?>
      <?php the_sub_field('body_copy'); ?>
  	<?php endif; ?>
  <?php endwhile; ?>
  
  <?php 
  // right col flexible content
  while(has_sub_field("right_column")): ?>
  	<?php if(get_row_layout() == "body_copy"): // layout: Content ?>
      <?php the_sub_field('title'); ?>
      <?php the_sub_field('body_copy'); ?>
  	<?php endif; ?>
  <?php endwhile; ?>    
    
<?php endwhile; endif; ?>