Yes! I've asked myself that...why such a long black out time? It doesn't make sense, considering he ultimately led LE to her body. What happened between 385th and the cornfield, along that 15-20 minute drive, that he doesn't want to talk about? To tell you the truth, I highly doubted a sexual assault previously. I thought he flew into a rage at 385th, stabbed her right then and there, and that was it. But the more I think about the timeline, the more my thoughts are going in a different direction.
7:45 - 8:28 is a long time, if they have precise TOD due to FitBit or something. And the 8:28 doesn't necessarily have to be at 385th or the cornfield, so we don't know how long CR's claimed blackout might have lasted.
That's why, between CR's description of events, the timing of his blackout, the time range on the affidavit, and that southern POI on LE's map, I feel inclined to at least consider a third location as the place he killed her. And if that is the case, it also indicates a higher likelihood of a SA occurring there, as well, because he took her off a main road, and he had the time. JMO.