I have a Google Pixel 3 phone. Today at home, I was listening to songs using the JioSaavn app. This was streaming the songs via Google Home speaker in my living room. At that moment, my dad called me on WhatsApp voice call.
At that moment, I thought that the songs will stop when the call comes through. My son attended the phone call and I was watching him. He switched the WhatsApp call to a video call. But the songs continued to play on the Home speaker. My initial thinking was this current song was already streamed and so it was able to play and I waited for the next song to begin. To my amazement, the songs continued with no interruption and the video call was fine as well.
I was stuck in the olden days when you attend a phone call, it caused an interruption and the phone will react to the phone call causing all audio-related actions to pause.