The Galaxy S6 Edge is not a GSI Treble device officially supported by Samsung.
The last stockROM was Android 7.0 (Nougat) with TouchWiz UI.
The partitions had to be adapted (System 4.3 GB, Vendor 500 MB) and then
A only ARM64 Pie /e/ GSI from here.
The “zeroltexx” is started without any problems, with the /e/bootanimation up to the homescrenn.
One problem I couldn’t solve until now: The SIM card isn’t recognized. I suspect inconsistency in /vendor. Let me see if I can find a solution.