These are largely dead in hybrid scenarios, because those that would be meeting face to face don’t work in the office on the same day.

I work at an office that started hybrid after covid because enough employees quit when they went to full RTO. The IT department ended up with 2 days in and 3 days remote, but the 2 days are the same for everyone so that we are all in the office at the same time for the spontaneous conversations.

It works pretty well. 2 days to collaborate and keep up relationships, the other three days to get individually completed work done.