Ask HN: How well do you know your colleagues?

I'm currently coming off of a project where I barely knew my coworkers after having worked with them for more than two years.

Before this project, I used to work with coworkers who I learned to know a lot better.

I don't know how much of this is because of the pandemic and how much of it is because of other cultural aspects of the project.

How well do others know their coworkers on a personal level? Do you feel like you should or shouldn't share aspects from private life with your coworkers or not?