Re: Yet another similar experience
I had something along similar lines, but more mechanical.
Coming out of uni, did the usual milk round which included an interview with Rolls Royce in Derby (aerospace engines).
Turned up and the morning was a tour followed by an "engineering test" due to last an hour. So I sits down and looks at this, and it's stuff like here is a train of gears, if i turn the first one clockwise, which way will various others in the sequence turn? They did try to throw a curve-ball or two in there (for example 3 gears meshed together in a triangle - the answer being none of them can turn).
So I'm there thinking "these guys make the engines that keep planes flying and they give tests like this?", but I look around at my fellow candidates and they all seem to be struggling or just looking dazed and confused. it was the weirdest experience I've had in such a situation. Especially given I think I finished the test in 20 minutes, then had the invigilator sit there looking at me and wondering what to do with me for the next half hour or so.
Anyway I finish the day up and a few days later I get a letter starting "Congratulations. When you start with Rolls Royce...".
As in I've passed the interview, and they seem to be just assuming I'm going to take the job because they'd offered it to me.
In fact they were one of four possibilities I had, and that letter combined with that test immediately put them at the bottom of the heap.
I ended up with offers from all four, and the chosen one is still my employer to this day, over a quarter century later...