Are they monitoring the mwd, lwd, and rss data and making remote drilling decisions?
There is some of that, too, even remote 'geosteering' using MWD data.
I always found it interesting that when it came time to cut costs, the first to get the cuts were humans in the field. That iron might need to pay for itself, but it doesn't have kids to feed.
40 hours without sleep is just too long. You see things out of the corner of your eyes and hear stuff by then, and you're past the point where mechanical devices that won't work 'have it in for you'.
Humans need that nap time, and it's the sleep deprivation that makes anyone sketchy after 36 hours.
Unless you have been there and understand the effects and deal with those, too, it would be easy to become irrational, even wig out.
Incidentally, Sleep Deprivation is why speed freaks lose it, too.