Originally Posted by
KNRG
Well, it's at least right with regards to Venice. The only way to get to/from there on CO is a codeshare to AMS.
Well, that is the only way to get there with a CO code but there are at least three other easy ways to get there that I can think of - via CDG, FCO or on the JFK-VCE nonstop that Delta operates.
And once you're on a partner flight the code on it doesn't really matter.