> In the days before Slack and being constantly plugged in people were a lot more conscious about interrupting others and we had less interrupts. The reason we have more interrupts today is that it's just too easy to interrupt people.

So much this. Our org moved pretty quickly into organising and communicating via Teams when the lockdowns hit and people starting working from home. Moving that quickly meant that many basic things like messaging etiquette never really got thought about. Even now I'll still receive messages when my status is set to DND or receive complete junk openers like "You there?".