Hi there. There's no other better explanation than what this guy posted previously (no solution found) where he basically says:
What I'd like to accomplish is the following:
I like to add a "Reply to Comment" Link at the lowest allowed Depth in the new 2.7 threaded comments.
At the moment I have a depth of 2, so only top comments have the link to reply to them directly and all answers are shown below this comment. If someone else already answered to it, the comments are shown in chronological order.
Unfortunately I always have to click on the reply link from the top comment, because the comments below it don't show the link.
Is it possible to have a reply link on these lowest comments, which does basically the same as the reply link on level above, so that people realize they can answer here as well?
At the moment, I am using comments at depth 2 with the code from the Codex which is:
<?php comment_reply_link(array_merge( $args, array('reply_text' => 'Reply', 'add_below' => $add_below, 'depth' => $depth, 'max_depth' => $args['max_depth']))); ?>
However, no "reply" to this comment link appears on the children comments. Please help!