From what I can tell, the sedan is the RLX replacement, not the TLX. As for the MDX, I can only hope the exterior is a bad computer rendering, because the rear is so ungainly/bulbous and unappealing that it’s a disaster. Proportions are terrible. On both the sedan and this crossover.
"In three words, I can sum up everything I have learned about life; it goes on." -- Robert Frost