The only PoD within the specified timeframe that I can think of is that the Slovakian uprising in ‘44 is handled better by everyone involved and succeeds in allowing the Red Army rapid passage into and through the country. A subsequent southward thrust into western Hungary during the fall gets into the rear of the German defenses against the Soviet forces coming in from Romania and clears a way to advance into Czechoslovakia and Austria during the winter then Southern Germany in the Spring.
Then again, it might not be that simple. The Germans would undoubtedly respond to such losses in Hungary by shifting in forces from other fronts and that could accelerate the advance of the Soviet forces on the main axis in Poland and the WAllies through the Low Countries and Italy while slowing the Soviets in Hungary back down. In that case, it’d shorten the war overall, but doesn’t change the final lines of demarcation.
I don’t think USSR would be able to do it, the Soviets was running on steams,
Again and again I see this claim made and again and again I can’t find anything up. Soviet production and supply throughput figures for the first part of 1945 are all in excess of the prior periods of war, with munitions supply in particular having grown so large that Soviet artillery was firing off a 1,000 tons of rounds more then their WAllied counterparts were, and manpowerwise the declines in strength among rifle formations were matched by increases in mechanized, artillery, and other support services, with the Soviets still having 1.3 million replacements in reserve when the war ended.
All that would likely happen if the Soviets could reach southern Germany (likely through Czechoslovakia) would be that they would seize more material and equipment as reparations for the German invasion before handing the area over to the Americans (possibly in a phased withdrawal that was coordinated with an American and British withdrawal from any areas in the north which were supposed to be in the Soviet zone).
Pretty much what I figure would happen, yeah. Snag anything that isn’t nailed down and on fire then sow the region with communist stay behinds before handing it back over.