What is the Headset icon on apps in dock on iPad? I use ipad occasionally but today I came across a new &quot;icon&quot;, which I have never seen before.

I have not connected any headphones to the iPad. So, what is the little &quot;headset&quot; icon on top of the app icon in the dock?
iPadOS: 14
I was just wondering the same. According to 3 Reddit threads this is a Siri App Suggestion based on having used the suggested app with headphones.
These are the threads:
https://old.reddit.com/r/iphone/comments/bbjz1d/what_does_the_headphones_symbol_mean/
https://old.reddit.com/r/ipad/comments/78j9k6/headphone_icon_in_docks_recent_apps/
https://old.reddit.com/r/ios/comments/74b74u/weird_dock_bug_when_using_headphone_jack_in_ios_11/