Lucius tips his head in partial dismissal of the idea Severus presents, but-- he has no argument. It's an interesting thought, and not one that had immediately sprang to mind, and maybe that's why he's here. To speak and speculate, to put that fear he'd known into intellectual discourse, kept in a bell jar.

"Not intensively. It kept a distance--" And Lucius took to the sky before it could want to get closer. "--but I did know the distinct feeling that it was watching me, and had been before I'd taken notice." His tone is a bit bland as he talks of feelings and senses that could sound slightly whimsical in any other context -- but these things count.

"Some of the wards I've put towards the Fog-side of my property have been tested now and again since."