Wow! That is interesting! Most people I've asked told me that leaving the chonograph running greatly reduced the accuracy of the watch but this is certainly not the case for the Sinn and I couldn't see why it would be. I just couldn't see why, if there is a total of 12 hours on the cumulative dial, it would matter one whit to the watch if the chronograph was left on or not.
I am very proud of the fact that I actually figured out how one could use the moveable bezel to use the watch in another time zone. If there was a 6 hour difference perhaps one could use a system of mirrors...LOL
I will have a look at that WatchTime article as well and thank you for taking the time to reproduce it for me. Your table was a little garbled until I went to the 'reply' page where it became abundantly clear.
I wish I'd had this watch when I flew.
Thank you, again, for taking the time to do this. Greatly appreciated! Sorry if my reply is a little late - I've been away.