I think I see what you mean and what you’re trying to do. No you wouldn’t need to use an && check, but it is worth separating the checks and outputs to only the bits they need to control, which will make it a lot clearer for you.
What I think you’re trying to do is output $text on the left and $texts on the right. However your IF statements are exclusively saying
if $cols == 1 show me $text
if $cols == 2 show me $texts
Whereas what you want is:
if $cols == 1 show me $text
if $cols == 2 show me $text and show me $texts
To adapt my code slightly above, this would be:
<?php
$title = get_sub_field('title');
$text = get_sub_field('text');
$texts = get_sub_field('text_copy');
$cols = get_sub_field('columns');
<?php
// check if the flexible content field has rows of data
if( have_rows('text_section') ):
while ( have_rows('text_section') ) : the_row(); ?>
<div class="entry-header">
<h1 class="entry-title"><?php the_title(); ?></h1>
</div>
if( get_row_layout() == 'blue_content_blocks' ) :
if( $cols == "1") : ?>
<div>
<?php echo $title; ?>
<?php echo $text; ?>
</div>
<?php elseif( $cols == "2") : ?>
<div class="blue">
<div class="col-sm-6">
<?php echo $title; ?>
<?php echo $text; ?>
</div>
<div class="col-sm-6">
<?php echo $texts; ?>
</div>
</div>
<?php endif;
endif; //get_row_layout
endwhile; //have_rows
endif; //have_rows
?>
