WordPress Multisite Naviagtion, child and grandchild pages

I have a WordPress multisite that contains 3 sites – site-1, site-2 and site-3.

site-1 and site-2 are sigle page sites.

site-3 contains child and grandchild pages.

I want the same nav to appear on each page showing the sites and the child/grandchild pages.

I have it working to the child pages of site-3 but I can’t display the grandchild pages.

I’m using wp_get_pages because I don’t want a ul list but to have it in div’s

The wp_get_pages works on the child pages.

I’m then trying to use a second wp_get_pages to show the grandchild pages while in the foreach loop of the first wp_get_pages.

Is it possible to show the grandchild pages using this method.

Any help would be greatly appreciated.

<div class="navbar-collapse collapse">
          <?php

          $the_blog_id = get_current_blog_id();

          $bcount = get_blog_count();

            global $wpdb;
            $blogs = $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->blogs WHERE spam = '0' AND deleted = '0' and archived = '0' and public='1'",13, 'stack overflow'));

            echo($blogs->blogname);

            if(!empty($blogs)){
                ?>
                  <ul class="nav navbar-nav">
                    <li class="portalHome"><a href="dashboard.html">
                    <i class="fa fa-home"></i>
                    <i class="fa fa-chevron-right pull-right chervonMobNav"></i></a></li>
                <?php
                foreach($blogs as $blog){
                    $details = get_blog_details($blog->blog_id);

                    if($details != false){
                        $addr = $details->siteurl;
                        $name = $details->blogname;
                        $className = str_replace(' ', '', $name);
                        $strclassName = strtolower($className);
                        $id = $details->blog_id;

                        if(!(($blog->blog_id == 2)&&($show_main != 1))){

                        $class = ( $blog->blog_id == get_current_blog_id() ) ? ' current-site' : '';

                        ?>

                        <li class="menu-item<?php echo $class; ?> <?php echo $strclassName; ?>" >
                            <a href="<?php echo $addr; ?>"><?php echo $name;?> <i class="fa fa-chevron-right pull-right chervonMobNav"></i></a>

                            <?php

                                if($blog->blog_id == 4){
                                    //show the nav for blog 4

                                    switch_to_blog(4);

                                    $pages_args = array(
                                        'exclude' => 2,
                                        'sort_column' => 'menu_order',
                                        'parent' => 0,
                                    );

                                    $pages = get_pages($pages_args);

                                    echo '<div class="subNav">';

                                    foreach ($pages as $page){

                                        echo '<div class="subNav__section">';

                                        echo '<h2>' .$page->post_title . '</h2>';

                                        $this_args = array(
                                            //'sort_order' => 'DESC',
                                            'hierarchical' => 1,
                                            'sort_column' => 'menu_order',
                                        );

                                        $inner_pages = get_pages($this_args);

                                        foreach($inner_pages as $inner_page){

                                            echo '<div>' .$page->post_title . '</div>';

                                        }

                                        echo '</div>';

                                    }

                                    echo '</div>';

                                    restore_current_blog();

                                }

                            ?>
                        </li>

                        <?php
                        }
                    }
                }
                ?>
                </ul>
                <?php

            }
            ?>
        </div><!--/.nav-collapse -->