This reminds me of the suspicions that anyone who killed with a knife must certainly be an ex-military hunter with butchery experience and did volunteer work at a blood bank to be comfortable "pulling off" such a series of murders.
Do you need to have practiced breaking and entering to pull off a quiet, stealthy movement around a house? Don't most people stealthily move around their family home growing up as soon as parents to go bed to grab snacks in the middle of the night?
It's going to come out in the trial, and have all of these questions cleared up as to the order of murders and (I believe) the placement of bodies will paint the picture of what went down.
I posted this yesterday, but considering we still only have an affidavit to work off, I think it's worth developing this:
To establish a clearer chain of events than how it is described in the affidavit, would be to outline events and REMOVE Dylan's account entirely, listing the events that can be corroborated by solid verifiable digital receipts, etc. For example, the 4:00am DoorDash delivery and Xana's TicToc usage at around 4:17am.
Next you would include time of the final return of the Elantra sighting on cameras, along with the security camera sound capture that picked up the thud and "whimper", and the final post-murder Elantra exit.
Once you have this outline, add in what the affidavit details is Dylan's account of the night. Considering she would be recalling events from a very traumatised memory (not to mention she was likely drunk and very tired.. and human without an inbuilt digital clock), it may make it easier to piece together what she may have actually heard versus what she THOUGHT she was hearing and from whom at specific times.
As an example, there's no mention of Dylan hearing Xana take delivery of the DoorDash order at the time she says she thought she heard K playing with Murphy - especially considering Xana would have either answered the front door on the bottom floor, OR the DoorDash order specified delivery to the second floor sliding door. Hearing the line "there's someone here" may also refer to the DoorDash driver arriving as well, with K potentially saying this out loud if the driver knocked?