a hit is a hit yes true but there are many ways it could of been carried out. for all fredo knew they wanted the drapes open to spy on him for a bit to know his moves.
fredo aint the brightest bulb in the package so whilst he may have known kay would be in danger like you say, i doubt hed comprehend it right away
"Death is the answer to all problems. No man, no problem."
"I'd rather be hated for who i am, than loved for who i am not"
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