Hmmm… that would require custom development.
Something that you may be able to work with.
The theme provides an option in the customizer to set its Navigation locations to a sidebar.
If thats applied then you should be able to create a shortcode to display that siderbar.
This PHP Snippet would do that:
add_shortcode('display_right_sidebar',function(){
ob_start();
get_sidebar( 'right-sidebar');
return ob_get_clean();
});
Then you can add this shortcode to the content: [display_right_sidebar]
That might work 🙂 But would also need some CSS to size it correctly.