[bbutterworth]

for me slack is an async function. its on silent, the entire time. And my time slices are large (2±1 hours)

[dkdk8283]

I try to do this too but Slack updates the favicon when in do not disturb. It’s like catnip, plenty of dark patterns

[ultrafez]

There's an option in the Preferences to "Show a badge on Slack's icon to indicate new activity" which, when unchecked, may stop the behaviour you're describing.