V8 crankshaft with one rod journal and two connecting rods.
http://thekneeslider.com/ducati-elenore-v8-update/
I went to your link and saw the configuration, but still don't get how (2) connecting rods for each side works for the other (6) pistons. My computer asked for a plug-in when trying to access the videos, so no go.
I don't get it. I am somewhat knowledgeable on internal combustion engines and currently have 1958 Impala. As long as I remember, it's always been one rod for one place on the crankshaft.