WI (German's) Enigma is broken a few years later

While working in breaking the German codes in the 1930's, the Polish Cipher Bureau received help from Hans-Thilo Schmidt, an employee at the German Cipher Bureau who spied for the French military inteligence and gave them the instructions on how to use the German enigma machines. WI that guy's spy role is early detected or, easier, he just doesn't get the job?
That will not stop the Allies from eventually breaking the German codes (unless we fill the thread with another several PODs, of course) but it will delay it for a long time. So, WI the British can't decode the German codes until, let's say, 1943? Which are the effects of WWII?
 
My sence is that the Brittish break it anyway, not soon after they did it in OTL. The machine cryptos of the time got broken. One guy did it in weeks.
 
If some butterflies also manage to delay the development of sonar for a significant time, then it might have a more severe effect, although the defeat of nazi germany is still the most likely outcome, seeing how the allies out-produced the axis anyways.
Well, if the german u-boats manage to keep up threatening the atlantic routes in a major way, then the US might switch to a "Japan first" strategy, so that they can send their stuff via Russia and the Pacific Ocean (which will see far less german submarines) to Europe.
 
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