Audio via Bluetooth from Phone while Volumio is running

Just a simple Question but I couldn’t find a clear answer anywhere:
When I have Volumio on my RPi 3 running, can I play music from any BT device like my phone via the RPi 3 built in BT function?
What happens if I, let’s say, stream some Webradio stuff via Volumio and then suddenly I decide to play a Youtube video (or any audiofile) on my phone but I want to listen to the audio via my hifiberry HAT? Do I hear the BT audio from my phone or is Volumio still playing the webradio?
I need this info before I can build my HifiBerry :slight_smile: Thanks!