Maximum extent of Red Europe with late war POD

With an POD no earlier than of 5.June 1944,the day before D-Day,what is the maximum possible extent of the Soviet control in Europe? How this is achieved is up to you,maybe Stalin negotiates a bigger share at the IOTL Yalta conference,or the Red army advances faster and the Iron Curtain falls where each army stands at the end of the war.
Also,what do you thinks would be the effects of a larger Soviet occupation zone?
 
Your gonna see something pretty close to OTL. Even if we posit the most ideal scenario where where D-Day fails or the Valkyrie Plot of Hitler disrupts the eastern front (but not the western front, through some ASB magic) enough so as to allow the Soviets to roll up to the Rhine, Stalin would subsequently withdraw to an agreed upon line in Central Germany to the Western Allies as a thanks for the aide they have given him and probably as a concession for some things elsewhere. Although, admittedly, he'd be sure to loot west Germany quite thoroughly and sow it with stay-behind-agents before leaving. Probably shift the border of East Germany a few dozen or even a hundred kilometers further west and a communist Denmark, but that's about the max I can see.
 
I think you could potentially see the communist movement in Greece take power and there's also the possibility of a communist election in Italy in the post-war period but they would reflect Albania or Yugoslavia more in the sense that they would be relatively independent from the Soviet Union unlike, say, East Germany or Poland.
 
I think you could potentially see the communist movement in Greece take power and there's also the possibility of a communist election in Italy in the post-war period but they would reflect Albania or Yugoslavia more in the sense that they would be relatively independent from the Soviet Union unlike, say, East Germany or Poland.

Not to mention a potentially red Finland.
 
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