I find now even in the office, people are so busy switching between being glued to their Slack or or video chat, then switching back to work, that it is harder to walk up to people and interrupt them casually. So I don't feel the quick bounce of an idea off someone is as smooth as it used to be, in my case, where my workplace has one thousand slack channels going all day. Also we don't have telephones, which I believe makes communication harder.