Corona Insights interview questions

This is the lengthiest interview process I’ve ever done. I wrote an essay to apply (less than 1k words), then had a traditional phone screening that was about 30 minutes, was asked to do a 3 part 90 minute math test, and last was sent an excel sheet to prepare an 8 slide PowerPoint presentation which I presented to 9 people over Zoom followed by nearly 2 hours of questions from all 9 people. This process took weeks and I spent over 8 hours total on it. The 2 hour interview alone was grueling, and I was told I was only 1 of 4 people. It took me 3-4 hours just to crunch the data to prepare for the presentation. I understand the need to be thorough so you pick someone capable, but please keep in mind this is time interviewees are not compensated for and not getting a job after such a large commitment is very disappointing, especially when you are a strong candidate who gave your all at every step.