newsupernova/vendor/magento/module-sales/view/frontend/templates/order/comments.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

// @codingStandardsIgnoreFile

?>
<?php
/**
 * @var $block \Magento\Sales\Block\Order\Comments
 * @see \Magento\Sales\Block\Order\Comments
 */
?>
<?php if ($block->hasComments()):?>
    <div class="order additional details comments">
        <h3 class="subtitle"><?= /* @escapeNotVerified */ $block->getTitle() ?></h3>
        <dl class="order comments">
            <?php foreach ($block->getComments() as $_commentItem): ?>
                <dt class="comment date"><?= /* @escapeNotVerified */ $block->formatDate($_commentItem->getCreatedAt(), \IntlDateFormatter::MEDIUM, true) ?></dt>
                <dd class="comment text"><?= $block->escapeHtml($_commentItem->getComment()) ?></dd>
            <?php endforeach; ?>
        </dl>
    </div>
<?php endif;?>