Index: wp-content/themes/twentynineteen/sass/site/primary/_comments.scss
===================================================================
--- wp-content/themes/twentynineteen/sass/site/primary/_comments.scss	(revision 54300)
+++ wp-content/themes/twentynineteen/sass/site/primary/_comments.scss	(working copy)
@@ -86,6 +86,11 @@
 		top: calc(-3.5 * #{$size__spacing-unit});
 		width: calc(100vw / 12 );
 	}
+	.comment-reply-title{
+		small{
+			margin-left: 0.5em;
+		}
+	}
 }
 
 #comments {
Index: wp-content/themes/twentyseventeen/style.css
===================================================================
--- wp-content/themes/twentyseventeen/style.css	(revision 54300)
+++ wp-content/themes/twentyseventeen/style.css	(working copy)
@@ -4371,3 +4371,7 @@
 		padding: 0;
 	}
 }
+/**  Comment Title	*/
+.comment-reply-title small {
+    margin-left: 0.5em;
+}
\ No newline at end of file
Index: wp-content/themes/twentytwentytwo/style.css
===================================================================
--- wp-content/themes/twentytwentytwo/style.css	(revision 54300)
+++ wp-content/themes/twentytwentytwo/style.css	(working copy)
@@ -146,3 +146,9 @@
 	padding-left: var(--wp--custom--spacing--outer);
 }
 
+.wp-block-post-comments .comment-reply-title > small::before {
+	content: "";
+	display: inline-block;
+	width: 0.5em;
+	height: 1em;
+  }
\ No newline at end of file