But both books fit into the '91 Series somewhere between hours 3 & 4, with Book 1 actually taking place after Book 2...
Well, that certainly is quite confusing... I have a hard time imagining so much time elapsing between hours 3 and 4 of the series. (That is, if it's Christmas 1991. In what year, and roughly what time of year, do they expect us to understand the whole story started?)
For sure, the OS had fun jumping through time, but they usually were pretty clear about
when we were in the story. They didn't have nonlinear story arcs like Innovation seemed to be doing.