Around 10 hours all in all, spread over 6 weeks. Everyone I spoke to was friendly.

You're expected to digest a whole trove of interview prep docs and videos if you want any chance at an offer. I did not count that into the 10 hours above.

If you're really into LeetCode and algorithms, you won't have a problem.

You're told all interviews are supposed to be a discussion to see how it is to work with you. However, having tried to discuss my process, I was given the feedback that I was not focused enough.

Seeing that this particular position has been open for 5 months at this point, I wonder if they're actually trying to find someone.

Implement sorting algorithms on a whiteboard. Infrastructure diagram for an Asana feature. Infrastructure and architecture scaling challenges. Timed Leetcode challenge to do at home with follow-up discussion.