Ro Software Engineer interview questions

Two over the phone screening interviews that took roughly an hour each. One with the recruiter and one with the hiring manager. Afterward I was given a take-home technical test where they wanted me to match a collection of drug names to their side effects. It was a fair test in my opinion. The next phase was what I had an issue with. The next phase of their interview process at the time (and I know they aren't the only ones who do this) was having to meet with at least 5 different groups of people throughout the day, ultimately causing me to book an impromptu vacation day just so I could attend... for a job I wasn't guaranteed of course. And yes, I did ask if it could be broken up and was told no. In my opinion, this was pretty inconsiderate. It was a remote position, with a team that was all remote. I don't understand why it couldn't have been broken up over several days and times with whoever they wanted me to meet with, but here we are -- and all I have to show for it is a rejection letter and a wasted vacation day.