The child could have been a nephew in the cartajia house, or possibly been sired by a concubine, or have been in the womb when Cartajia was killed.
I loved the two epsidoes, did not notice about the sets, and loved it. I was disappointed there was no ship combat, well there was a clip that was nice, but not much, and it boiled down to both characters making a decision. More like a rpg session with no combat and a lot of down time, but a nice re-introduction into the series, like a new beginning. I wish the show would come back for good in some form.
It was cool seeing the documentaries, and good to know more is coming out. I also though seeing Kosh in the opening credits was cool, it would be nice to see more vorlons. Apparently they are gone, but apparently they posed as angels and whatnot, but I certainly believe asmodeus is an actual demon, not a shadow, or the hand, or any first one stuff, my two cents.