It looks as if you are being bitten by an "undocumented feature" of wantarray(). Rest assured though your efforts were not wasted, this small sample has assisted my education at least.
With regard to the code. If I understand what I am seeing, the overloaded operator will only be called if the variables to which its applied have been blessed into the package in which the overloading is done by the use of new()?
I assume from this that there is no way to overload an operator such that it will operate without requiring this?
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