Kraig Biocraft Laboratories Inc (KBLB)

[first mike]

according to you, there is no documented timeline..

Wrong again! One of the ways to prove precedence is to publish, but there are dangers in doing that because you will lose the right to patent the idea yourself if you don't do it quickly enough.
The obvious method is to apply for a patent immediately, but to do that you must describe your invention in sufficient detail for it to be duplicated by "one skilled in the art" and if for some reason the patent is not granted your intellectual property is lost.
But a documented timeline can be established in many other ways and has been for Dr Davis' invention.
One classic way was to send documentation to yourself through the mail or another time stamped channel, but this can be challenged for proof of custody.
The best method for proving date of invention without general publication is to disclose it to others skilled in the art who are bound by nondisclosure agreements.
Back at Bell Labs we all kept laboratory notebooks.
If I thought of something that might be patentable once reduced to practice I would carefully document it in my notebook as if for a patent and then ask one or more of my coworkers to read my entry and if necessary ask for clearer description of some part or process they did not fully understand to be added to the entry.
The colleague would then sign and date my lab notebook pages as "read and understood by Charles Ox, Jan.20 2019" in such a place and manner that it was physically obvious that the signature was written after the entry.
Old lab notebooks were returned to the company for preservation and storage and could be shown as irrefutable proof of the date of discovery.
In addition to the brief mention on the radio program which I can provide you a copy of, such a notebooking process certainly exists for Davis' invention as well since it was passed on to other KBLB scientists and managers for implementation.

Mike L. 1/20/2019