There is actually a lot going on. I have always been prepared and confident about my replies from a technical background. From an HR perspective, I don't know what to think, you either fit or not. I have always been interested in cargo flying. I have failed the assessment of two or three passenger carrier - although in one I was the least experienced candidate -, went to two cargo carriers assessment and passed both of them.
The failures, as a hard blow they might be, turned out to be a good experience.