The actual hiring process was great. The questions were fine and interviewing was great and everyone who works there seemed excited for me to join. They offered me a job on the spot.
I told them up front that I'd fail the drug test due to a legitimate prescription medication. They said no problem, just tell the drug testing company and they will take care of it. The drug testing company did not accept being prescribed the medication as a valid reason for taking it and so still considered it a positive/failed test result and hence I have never heard from them again.