custom child_of breacrumb-style page title

I’m not after a breadcrumb plugin, I’m after a way to call the parent page with php so I can wrap it in an <h2> tag and show it in my default page template.

https://codex.www.ads-software.com/Template_Tags/get_the_title

<h2><?php if($post->post_parent) { echo get_the_title($post->post_parent).' > '; } ?><?php the_title(); ?></h2>

Thanks heaps,
In the design, I need to show the sub-page as an h3 with a class after the Parent title (which is an h2) and if the page IS the parent page, then to have it show up as the h2.

If we’re on a sub page:
<h2>Parent Page</h2><h3 class=”page-title”>Sub Page</h3>

If we’re on a parent page:
<h2>Parent Page</h2>

See on the testing site: https://ideasconnect.callitest.com/services

how it works great (thanks!) for the sub pages, but it is showing the ‘sub-page’ class for the title if we’re on an outer page.

I tried making an else statement, but I don’t know how to put the html into the echo output.

i hope i understood this right:

<?php if($post->post_parent) {
echo '<h2>'.get_the_title($post->post_parent).'</h2><h3 class="page-title"> '.get_the_title().'</h3>';
} else { echo '<h2>'.get_the_title().'</h2>'; } ; ?>