Tim completely understanding that his training was different from Jason's and Dick's because Bruce was at a low point but still not really trusting him to train Damian. As much as he hated the pompous brat, a small part of him was relieved when Dick took over his Robin training. Logically, Tim knew Bruce was better now. He knew that Bruce would pull his punches when weapons sparring, he knew Bruce was picky about the missions he allowed Damian on (even now when Damian had been Robin for years). The care Bruce shows Damian painfully relieving. He lets out a breath every time he finds Damian unbruised after a sparring session, ignoring the phantom aches of a younger him. Still, there was that dark wriggling mass inside him that made him keep an eye on the mats whenever he caught them training. One time he barely restrains himself from jumping up from the batcomputer and rushing over when Bruce flips Damian onto the mats a bit too roughly. Of course, Bruce is immediately muttering apologies, which Damian shrugs off easily, and cancels the rest of training so he can look him over. As the father and son duo leave, neither older man can look at the other. One day Bruce will apologize, will explain everything Tim already knows. Then Tim will do what he's always done, and ease his guilt with understanding.
it's so funny when people are surprised that they can be clicker trained like a dog. of course you can, you're an animal too. thing is, when you clicker train dogs it's actually harder to.
dogs don't know they want it already, after all. you could be trained in a week.