Slack has made it impossible to tell when work ends. In this episode, Lucas and Luna dig into one specific problem: the unspoken rule that you must reply fast, and how that expectation quietly takes over your calendar. They walk through the psychology of the double-check, why 'quick question' often isn't quick, and the practical move of setting an explicit reply-time boundary with your team. Using the example of a product manager who put 'I reply within 24 hours on Slack' in her bio, they break down why that simple line changed her team's behavior. They also get concrete: what to write when you want to reset expectations without sounding cold, how to handle urgent threads without breaking your boundary, and why the best teams treat asynchronous response times as a shared norm, not a personal preference. This is a practical playbook for anyone drowning in notifications. It is not a lecture on digital wellness; it is a set of scripts and frames you can use this week.