You downloaded from
APPSPOT.COM which has nothing to do with Chrome, MS-Edge nor ??? except a test chromium that is not guaranteed to be reliable nor fully tested. I'm not familiar with it. Maybe someone can tell you how to start, uninstall and other important information about it.
You say there are 2 CHROMES on your desktop but Appspot is chromium (very different). I suspect that you somehow got a second shortcut to the same Chrome because it's unlikely Appspot would create a shortcut labeled Chrome that points to Appspot's Chromium. Far more likely is that both shortcuts point to the same Chrome. I can't tell you how it got there but look at them to see if they use the same directory.