Thanks for the TR!
If you don't mind me asking, how was the back to back? I'm guessing with a longer turnaround for a heavy bird, and a quieter airport it wasn't difficult at all, but I wondered about the logistics (did you have to go landside, through security, etc.). The B2B thread mentions dropping you airside but going through security, is it like FRA? I haven't been in ages so I can't remember how it works at ZRH.