Delenn's line "I think of my beautiful city in flames" was later one of the phrases featured in the opening sequence of Season Five.
Londo says the Maker has graced the Centauri with "great big eyes, great big scanners, and great big... uh...." gesturing to his chest. This is actually where the Centauri keep their genitals when not in use.
This takes place from May 19 to May 21, 2261.