BNSF Railway Conductor interview questions

A few short weeks after applying for the position, I received an email from human resources saying that I was invited to the hiring session the following month. The hiring session consisted of an intelligence and personality test, hair follicle drug test, and interview via panel. A few weeks later, I received the job offer and began the pre-employment medical process, which consisted of a full physical and questionnaire. This is the part that lost the job for me. I have sleep apnea but the machine that I was given just doesn't do it for me.