And there is the little demon brat Tim has been expecting. Tim's neutral expression doesn't change but there's a pause as there's an overwhelming urge to snap at Damian about who exactly is lacking right now.

But he can't. Because in this situation he is a Submissive and Damian is a Dominant and it only draws attention to the high ground that Damian likely hasn't realised he holds there. He waits a moment until he can keep that strain of anger out of his voice.

"He knows because I've told him but he has no living memory of you. He knows of your circumstances and he has one photo of you that I've given him." So he will recognise you if you decide to approach him before he can come to you.