1) Finding a really early stage startup. We spend time finding the most interesting and fastest growing startups, and given the difference in outcome between the median startup and Airbnb, it's worth spreading the net as wide as possible.
2) Executing a broader job search (including larger companies) faster.
To me the biggest source of anxiety with these interviews is the hyper-focus on academic trivia that isn't applicable to almost all of engineering work being done there (where "there" is literally any company, including Google). It's one reason I'm looking to move into management and up the technical track: I'm tired of "are you a good code monkey" interviews.
Also, it takes a lot of time and effort outside of work to keep that undergrad CS trivia readily available for discussion in an interview. So it's not just "a couple of hours."
No, it isn't.
If you interview at NASA, the CS questions being asked better damn well not be trivia.
for feedback to anyone at triplebyte reading this: had a chance to chat with multiple companies, many of them thought triplebyte was just an online coding quiz then off to on sites. I'm sure management-type people knew the process was more involved, but the lower-level? people definitely seemed dubious about triplebyte's value.