FWIW - I have a bias about two connectors close together. It's not any science that I can explain or justify, just a bug. So, you might bring one chain down to about 110 links or less, then splice in a short length. Or you can cut them both nearer to the middle (not in the middle) and splice the two longer sections together, saving the shorter ones for your next chains.
But, if the cost is right, don't discount buying from Japan. The mail transit time will be shorter than you expect.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.