Call button in android

When I am in a call with someone on the mobile app there's a small green button at the top of the screen to take me back to the call, this sounds like a good idea but is incredibly frustrating. 1) the overlay for the app doesn't have a button to take me back to the call only to swap channels, deafen mute and open discord 2) using the video connected notification only opens up discord and not the call itself and 3) the only other button is in the chat which means I have to scroll up the chat to find it. This sounds really minor but it's actually quite uncomfortable pressing the green button at the top of the screen. It's incredibly small so it's hard to press even on a large screen and it's also just generally uncomfortable having it so high up. Instead it would be nicer if there was the option of having a persistent small button added to the screen that you could move around and just click it to enter the call. Oh wait that's the overlay, seriously why does the overlay not have an option to take me back to my call.