Once support for Windows 10 native notifications is released, users who choose to use Windows notifications will be able to utilize Windows OS specific settings for the length of time to display notifications. Mac does not have an OS specific setting, so will not have the support.
This feature remains under review.
An error occurred while saving the commentJonathan commented
I use this with Slack currently for notifications based on various systems - it alerts my phone when someone says the name of one of my systems, and then I know to look for something in that channel. Disappointed not to see it in teams.