JMO
I do think some of what is in the Arrest Warrant is based on what CBR said but I also think some of it is based on the Fitbit data.
Because of the very specific down to the minute ending time of 8:28pm. I dont think CBR would have known that exact time or told LE that right at that minute is when he left. Also the "known by me" part implies the information can also include things LE found out on their own.
"known by me, or told to me"
"Education gives us knowledge, failure gives us wisdom"
Reading though WS, I have truly come to appreciate the deliberately vague but accurate nature of LE's sworn statements.
Having been questioned many times in depositions and in open court by sharks in suits (anyone know where I can enjoy a good, hot bowl of barrister fin soup, as I suddenly feel a need?), and having my handwritten ex post facto notes put in my face in open court, I can REALLY appreciate the chance to craft a narrative knowing the attendant facts to date, but ALSO knowing for sure that I would have to eventually appear in court to testify based on that written record or affidavit.
In shooting, accuracy is how close you are to the bullseye, precision is how tight do all of your shots group. To be precise and accurate you need to put all of your shots in the 10 ring. (One of my instructors at my "military" Catholic high school could do this consistently at 50 ft with HIS personal 45's, and would split a paper target edgewise at the same distance to show off - Go Navy (MCGM))
I think that LE has to be close to the truth in their statement, but that all of the facts do not have to be grouped together, if present at all.
Keep in mind that in the arrest warrant, LE is crafting an accurate narrative that presents the facts as BEST known to date, but which does not give the defense counsel something to come back and bite them (LE) or the State prosecutor in the butt on live testimony, deposition or in open court. A very thin line to walk. The KISS (keep it simple stupid) principle applies here.
The bottom line is LE's intent is to keep the initial warrant application and warrant itself as simple and as accurate as is minimially necessary. The DA or State AG office will take it from there, and add addition narrative, and charges as the evidence and facts develop and their trial strategy matures.
I follow your line of reasoning, and think that it is reasonable. I understand your frustration, as LE and the State prosecutor in this case are too professional to give out much in this case.
Beware of going too far down the rabbit hole, as it is dark and there are hungry Jack Russels and Dashhounds down there!