It's picked up much later in s3 in a far more twisted context, when he's locked in a turbo lift with Londo.

Yes! I was struck by that, I'd forgotten it was the same song as he sang to his dinner. I'm sure you could make something shippy out of the reuse *g*, if it weren't so creepy in context...

The not-screaming thing was something I never really noticed before, but, yes: nice foreshadowing again.