The vast majority of chats seem to take much more linear time than a 1:1 conversation. Multi-tasking them just means 5 people are tapping you on the shoulder within a near-timeframe. So 5X worse than an office? Slack is often the worst part of some email and forum hybrid.

I often wonder how many problems used to be resolved because people worked together in the same location vs now it feels like the 10 things I interact with in a week are broken or require finding a work-around. Many of the chats are "how do you get around this?"