KAK claims he doesn't remember ever communicating with L. So was it just a coincidence that right around the time of the murders, before LE had even talked to KAK about anything, KAK decided he was "f'ed" and brought an extra bag to Vegas so he could go back after his dad fell asleep? What was he so worried about? That bit is from the affidavit, not the interview, so I consider it factual. Did he have reason to think he was about to get busted for CSAM, maybe? Why was he following the Delphi case and then immediately looking up how long DNA lasts and if IP addresses could be traced? This was from the interview, but KAK did not refute it.
Then we have BP and KG confirming that a_shots was communicating with L. Of course, we can't say for sure who was the user of a_shots in those communications, but the creator of a_shots happened to be the same guy who days after the murders suddenly thought he was "f'ed." If the user was KAK, he's lying, and if it was not KAK, he's telling the truth, but then we need an explanation for why he thought he was "f'ed," and how someone else was using his account.
Remember, per the affidavit, the FBI is the one who told ISP Cyber Crimes Unit about a_shots very early on. It isn't clear whether the SC and Comcast subpoenas were submitted and received before the FBI gave ISP this information, or after, but we're talking 11 days after the bodies were found they were ready with this data and a search warrant. So was the FBI already watching a_shots, before the murders, and maybe KAK knew it? In the end, the question is who was using a_shots in the communications with L, when did LE know about it, and how?
Now, could this all be coincidental to the murders? Sure. It's certainly a worthy trail for LE to sniff out, though.