This bothered me on my first read, and rereading 13 years later, I am still bothered.

Ultimately it's a small detail and I will likely just have to ignore it. But wouldn't Eragon immediately inquire about this obvious magic? Why is Brom being so flippant about it, when he had barely explained anything yet and was still hiding his past?
Is there some other possibly explanation that I'm missing because I'm blinded with knowing the truth already?

Ultimately it's a small detail and I will likely just have to ignore it. But wouldn't Eragon immediately inquire about this obvious magic? Why is Brom being so flippant about it, when he had barely explained anything yet and was still hiding his past?
Is there some other possibly explanation that I'm missing because I'm blinded with knowing the truth already?