Popping in quickly after a 22-hour day, hope this makes sense.

I think that, with Kaho, Eriol isn't going to lead her around like he did with Sakura, forcing her to figure out as much as she can by herself and using tough learning, but that he would wait for her to ask the right questions before giving out answers. Can't reread now to see whether I got that sense from your fic, but that's my general impression. Of course, that's mostly based on your characterization of him when he wasn't having his life turned upside down without so much as a by-your-leave in t_d, so it might not be the best yardstick for canon!Eriol...