Killua confuses the hell out of him admittedly; he can see alot of himself when he was younger in him, but at the same time Killua is alot more friendly than he ever was, and that confuses him, because what are different coping mechanisms?

He was still a tad surprised the boy got him a gift for Christmas, and still has to repay him for that, which he'll get to if they ever actually meet. Until then he intends to keep an eye on him, especially now Killua's travelling group is missing one member he found annoying even though him and Xanxus never met /power envy wut.

But yeah, all in all he doesn't get you Killua, and he'll keep a silent eye on you until he does.