[A_Venom_Roll]

An example I can think of is when you're listening to a podcast or music that has been recorded on low volume. Without a volume mixer you're forced to increase the general volume, resulting in overly 'loud' sound notifications from other apps.

[iron-s]

Media volume and notification volume have their own sliders

[A_Venom_Roll]

Unfortunately this doesn't work for notifications such as 'lap times' from the Garmin app. This is also considered media by the phone.

[happymellon]

The media volume slider is joint across the apps though if they aren't notifications.