Bringing my own post forward:
I thought I would highlight these points from this video interview with Kaylee's parents:
Fox News Interview with The Goncalves
[NOTE: I did my best to transcribe the dialogue, but it's hard on my phone while trying to type in one window and listen to the interview and type in the other. Any inaccuracies are my own.]
Dad: "
They're telling us that there's so much evidence that it's going to take a lot of time to process it all. This wasn't a pinpoint crime, this person was sloppy, he (I'm saying he, that is my assumption) made a mess, and they're going to have to go through that point by point and that's going to take a lot of time, that is why they reached out to other organizations to help with that processing."
Mom: "that's why they have a mobile unit on site, they said that that is really going help expedite things. They've reached out to multiple labs for help in DNA processing, in other states. Hopefully get sites like 23andme involved.
They haven't told us that they have DNA from the killer, but that they do have a ton of evidence. It's just going take a lot of time to analyze it. And now with the FBI task force on site they were able to collect a great deal evidence."
I don't believe it's a question of technology, but rather processing and elimination of everyone else's DNA. In a crime scene this messy with a lot of people coming and going, including investigators and crime scene technicians, it's going to take a while to sort through all of this and isolate the samples to be tested. I am not an expert though it's also a question of lab capacity, I have read many articles about Lab backlogs, especially during/after Covid. Of course, this case will get high priority, but it's still not instantaneous.