Sorry, but I think this is about the actual humans that are in IGG databases, not about DNA. Chain of custody for that information (the information used by LE to find the father) is what's at dispute - not the transport of DNA. That's my view - and you think they transported DNA.
There's absolutely no proof of either. I just know that ISL procedure is strict about sending irretrievable data (cells in the case of actual DNA) anywhere at all. There's no need to. Unless, of course, in rare instances - and if this is a rare instance, that hasn't been said either. If it is, then of course AT is challenging it (as she should).
But I am the type who thinks horses and not zebras. SNP profile is different than a regular DNA profile. THere are different formulae for SNP profile building. ISL ran the entire sample - NOT a subset (which is what an SNP profile is). And it is really too hard to explain here. I've tried.
I use a lab to do facial reconstructions. I am in a different lab when I do genealogical research (graduate work in kinship is a staple of anthropology). The forensics lab (run by colleagues) does different stuff - mostly with blood splatter, but also with footprints and fingerprints. We aren't rich enough (yet) to have students running organic samples, these are all computer-driven labs. It's exceedingly controversial to use organic materials in labs, so we do other things and the word "lab" should not conjure up just a few of vials, needles, microscopes, etc. For a good look at what the ISL process would have been when they studied the sheath, watch Spencer Wells's The Journey of Man (free on youtube). That is NOT what I'm picturing at Othram, I'm picturing it more like 23andme labs.
Now, if it turns out that they DID use Othram's "wet lab" services (which I admit is possible), then yeah, there are chain of custody problems and the Defense may get a win here. But it sounds like they did not use Othram's process lab, they went to the FBI, so I don't see the problem. All Othram did was use other people's data (given to them according to their own terms of service) to locate a Kohberger. Through an ordinary genealogy (a family tree) provided by someone who also submitted their own DNA matrix.
People use labs to do ancestral work and SNP profiles (that's what Othram, 23andme and Ancestry all do - with different algorithms, but NOT with different methods of looking at DNA). Either ISL ran the DNA or they didn't (and the FBI DNA analytics van was outside the crime scene, IIRC). I see no reason for ISL or anyone else to use another wet chemistry lab (which is what you seem to be implying).
ANd I'm trying to say that in MANY genetic laboratories - the only equipment you'd see is...a computer. Not the filtering media and computer used to get the initial full list of all those pairs (including but not limited to the SNP's - the SNP's are the subject of a different kind of lab study; a computerized lab that uses exceptionally sophisticated and complex algorithms, some of them proprietary - like Othram's).
I am absolutely certain that if "they" (PD/DA) did send Othram actual physical samples taken from that sheath that the Judge will make them state chain of custody. And give the Defense its own chance to do the same. If the PD/DA actually did this without at least checking with the then-Judge, wow, that's a huge mistake and yeah, there will be stuff thrown out of court.
That's what I'm saying. But I do not believe that to be the case, because the FBI knows what they're doing and guided this process and all states have the exact same laws about physical evidence in the category that's considerable "consumable."
IMO.