How do you know what time he returned home? What time did he drop clothes off at the cleaners? It appears there were people waiting near his house, maybe they were going to "surveil" him as mentioned at the briefing then changed their mind. Does DW have a place of business and would he likely be there on the weekend after taking off in his MH? How would the PD know where he stores his MH, it is a private location. Besides that, the PD might have taken a morning run for coffee and donuts and such before they got to really looking for him.
You have your opinion, and I have mine, I don't know what Brenda said but it appears to be an issue in the case. Amazing, nothing was brought up at the PH about what Brenda told the PD. We might see more about this issue at the motions hearing....
LE has access to DMV and other databases. They would have known his places of business and many other things. As to the specifics of where he parked his MH, they probably could not have known that unless told by a neighbor with, and I don't know that they did or didn't know.
Again, I ask, Given the aggression they displayed after the initial contact interview, where was that aggression if he was a suspect prior to that time? If he was "fingered" by the VD's in the 48 hours prior to that interview and they failed to pursue, they could have serious liability. They put massive manpower and resources into the hunt for Danielle. Would they have failed to pursue a suspect deliberately pointed out by the victim's parents, especially if they were still hoping for a live recovery?