wp-content/themes/twentytwentytwo/templates/page-large-header.html

<!-- wp:template-part {"slug":"header-large-dark","tagName":"header"} /-->

<!-- wp:group {"tagName":"main"} -->
<main class="wp-block-group">
<!-- wp:post-content {"layout":{"inherit":true}} /-->
</main>
<!-- /wp:group -->

<!-- wp:template-part {"slug":"footer","tagName":"footer"} /-->