However, among my colleagues (all very talented in their own unrelated areas) it generated a fair amount of consternation, because although they had a week to read it, none of them felt like they had a good grasp of it until after I had presented it. The key takeaways that had jumped out at me immediately were lost in the noise.
Whether or not a week is the right time, I can definitely empathize with taking more than a day to evaluate a paper, particularly in an area not very near to your own as there might be a lot of missing background to fill in. In contrast, my PhD advisor could flip through a paper in 30 seconds and pick up the key points it took me an hour to extract. In that sense, I really think that reading papers is a skill that can be trained.
[0]: https://drops.dagstuhl.de/opus/volltexte/2020/13109/pdf/LIPI...
You definitely don't need a week for just one paper. I wasn't even a graduate student. Papers are usually around 16 pages. It would take me a good 4-5 hours to read and digest things, and even longer when it was my turn to present a paper, but never an entire week... Professors go over these things even faster.
Either you have never read a research paper, or you are gifted, or you have been doing that for so long in your field that you forgot how hard it can be when you start.