I applied online through my university and received a 60 minute Hacker Rank coding challenge the next day. A few days after I submitted the coding challenge, I received a rejection email stating that I would not be progressing to the next round.

Bizarre and disrespectful. No coding questions asked, but he did ask me to speak a lot in detail about my project at my last job 2 years ago, down to details in the implementation that I could barely recall. Interviewers should respect or realize that other companies have NDAs and it's icky to press for super fine-grained technical details, but he kept asking. He also challenged things my company did and acted like he knew better than the people who actually worked there, and I was caught so off-guard I only realized after the interview how incorrect he was. For instance, I brought up the technical challenge of loading "50 2-minute videos 1080 p videos at 60 fps" from disk to heap memory." He very confidently told me that we could've just loaded all frames of all~ 50 videos at once into a very big array and that any personal computer which had 32 GB of RAM was "more than enough". There's a difference between RAM and heap memory, but even assuming I could allocate a 32 GB array in C++ without problems, the *actual* amount of memory required would've been 4 bytes/pixel x (1920×1080) pixels/frame x 60 frame/sec x 60 sec/min x 2 min x 50 videos = 2985.984 GB (This was just one of a few instances where he was like "maybe you guys should've tried this".) Also, I just got ghosted with not follow up interview. Was a waste of time, and it's sad they have interviewers who can't do math :(