Forgot about that, and I am chastised. Exact thirty degree bow at the waist, no longer than ten seconds, will not make the same mistake again.
If they were to ever run into the Dawn Empire, there would be issues, mostly over protocol.
You only kneel before the Empress, and then in only two circumstances-
1-The first time you meet her, because you’re acknowledging that you are in the presence of someone that can, on her own internal power, crack tectonic plates with a single strike. Come to the balk line, introduce yourself, no more than five seconds-less in insulting, more is trying to curry favor and she hates any soph trying to butter her up more than the insulting. At least the the insulting is honest-or at least ignorant. Stand, and never kneel again except in one other circumstance.
Basically, it’s the same reason why you’re polite in the equivalent of a Mark XXXIII Bolo in a very nice formal gown.
2-When she gets to use her “execute anyone single person, for any reason, once a standard year” card. If you have some dignity, you kneel so she can behead you easily. (And, she has to do it herself-she can’t farm it out.)
Otherwise, stand tall and respectfully, look her in the eye, be polite, and if she asks questions, give her honest answers. Good grammar and turn of phrase is fine, but never try to baffle with bullshit or tap-dance.