I share your frustration. I guess there’s always a reasonable...

I share your frustration. I guess there’s always a reasonable explanation given, or obtainable if you call RH. I see a clinical trial from my medical experience as a bit tricky to predict as you would need
1/ a patient
2/ a doctor
3/a hospital
4/a bunch of paperwork signed by all the above
5/a bunch of trial people to prepare said paperwork
5/the drug in the correct place
6/normal consent forms with a difference
And as it is a double blind trial from memory (maybe not for toxicity which is Probably first) then a whole lot of steps to make sure the patient and the doctor have de identified drug or placebo.

Any one of those steps could have a delay which would screw up the rest possibly by a week or so each.