An Allied attack on the Soviet Union after Germany's defeat

Could the Western Allies have continued the war against the Soviets after defeating Nazi Germany, and how would it have gone?

Allied air superiority and German reinforcements are expected, but stretched logistics on both sides would probably produce a stalemate in eastern Germany or Poland.

In this counterfactual assessment, both the Western Allies and the Soviets are near the end of their supply lines after Germany's defeat. The Western Allies are expected to hold air superiority because of their available bases. Much of the remaining German manpower is also expected to join their side in this hypothetical conflict. Even with those advantages, the predicted outcome is fighting that bogs down somewhere between eastern Germany and Poland.