The Little Chicago example, if I remember correctly, is later addressed, at least by implication of Harry being given help he didn't know that he was getting. It has been a little while since I've read that one though, so the details are merely a blur.

In a serial novel series like this one, I can pretty much promise you that Butcher wasn't writing in weird things with the intent to at some future time stitch them together with a time travel sequence. Now, that doesn't mean that Butcher might not pull out a time travel thing, at some point, though I really hope he doesn't, and piece together some things from previous books as primary reference points.