No. The for has the lowest of priorities. 
$_++ and say for 1..2;

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is not equivalent to 
$_++ and ( say for 1..2 );

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That's not even legal. The original statement is indeed equivalent to 

( $_++ and say ) for 1..2;

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In reply to Re^2: Auto-incrementing strings in for loops by ikegami
in thread Auto-incrementing strings in for loops by JadeNB

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