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WI intelligence had put togehter clues and decrypts and guessed right. Plus the aircraft carrier with Repulse and Prince of Wales had not grounded.
Japanese aircraft at extreme ranged might have done rather badly. Full batle statiosn might have saved the battlships at Pearl
With luck the Japanese carrier fleet might have been sunk in December.
Query would full knowedge have been enough to save the Phillipines given the military leadership there?