airpods playing audio from BOTH phone and ipad

okay so i’m working on my ipad typing some stuff out in the journal app listening to rain noises while also watching a stream on twitch on my ipad (multitasking) and i felt like listening to some upbeat music so i decided to put my other airpod in and one side is playing the stream and the other is playing the rain noise, is this a glitch or new update because ???? i can’t find nothing about this 😭