Picture in Picture on the iPhone with iOS 14 is one of those features once you experience and use, there is no going back. It's going to be a loved loved loved feature by news junkies reading twitter and sports junkies (when it returns!)
I realize this has been requested many times and the Channels viewer does not use Apple's Native viewer. However, Channels developers please reconsider supporting PIP this fall when iOS 14 releases to a wider audience. I'm sure its a huge undertaking, but the usability a user experiences with PIP versus being locked into the "media viewer" is profound.
So far its working great with (Native Apple media viewer)
ATT TV Now app
HBO Max app
Youtube from Safari browser only
Even the rounded edges Apple implemented makes the PIP viewer look great on the iPhone screen. Pinch in/out to resize or tap the window to resize.
Few moments you realize a iOS 14 feature that vastly improves the iOS experience. This is certainly one that provides you freedom to continue working, viewing, emailing, reading, etc... Great job Apple! Hopefully Channels iOS one day implements this PIP, as it surely will be appreciated by the masses!