[Hardware Hacking General] RunningRN:
I just want to say that I followed Wolfbaine's original post and I was able to get everything to work more or less. I want to second the post made by xda_uef about enabling the resizing for Netflix. That did the trick for me! Here is what I've been able to run so far on my Peloton Tread+ (2019 purchase):

Disney+ APK

Netflix APK

Chrome browser

YouTube videos (launched from within Chrome browser)

Hulu (launched from within Chrome browser

The one tip I want to give is that I had to switch the Chrome browser settings in the right-hand side of the browser to "Desktop mode" before Hulu would allow me to start videos within the Chrome browser.

The 1st time I went through the process described by Wolfbaine and got the Nova launcher installed and apps, somehow the Peloton app forced me to unselect the "Special Access -> Draw Over Other Apps" to get into the Peloton app. I don't know what happened exactly, but somewhere in the process it seems like the Peloton app blocked the Nova Launcher from popping up and all the apps were subsequently hidden and inaccessible. I had access for a brief time, then it disappeared. I did a factory reset on the treadmill and started over. This time I made the Nova Launcher the default launcher and then launched Peloton as an app from within the Nova Launcher. Even when I click on the Peloton app I am forced to unselect the "Special Access -> Draw Over Other Apps" in order to proceed. But this configuration hasn't hid the Netflix and other APKs this time (at least so far). I just wanted to throw this tidbit of information out there for people who are having problems getting this done, because maybe you will have success if you follow the sequence I followed. However, I have an older Tread+ so maybe the newer bikes and equipment have Peloton firmware or something that disallow this. All I know is that it seemed like Peloton software stopped the access, but I was indeed able to get it to work with a little perseverance. I do worry about a firmware update that restricts this new-found access sometime in the future.

As other posters have mentioned, the minute I try to resize the "Just Run" window, the entire "Just Run" workout restarts and all stats are lost, which is super frustrating. So basically you have to have the screens perfectly split the way you want for the duration of the workout and not adjust them. The other problem is that if I resize the Netflix window to take up 70% and the "Just Run" window to be 30%, the speed portion of the "Just Run" window is hidden. It's not ideal to not know how fast you are running on the treadmill. One work-around to this would be to set the pace at a speed you intend to keep the entire workout, then resize the "Just Run" to 30%.

I suppose this problem is similar problem to the total output portion, or right most metric on the bike being hidden. So the ideal setup is a 50/50 split from what I can see, or even a 70/30 split with the 70 being the "Just Run" so that most of the critical elements of the metrics are still visible.

It would be SO nice if someone here in the forum knew of a way to scroll vertically within the "Just Run" screen in order to see all the relevant metrics. Even better would be a way to rescale the "Just Run" portion so that all the metrics were shrunk and completely visible.