Stalin proposed landing operations in 1942. Why did the allies not launch Normandy landings until two years later?

Stalin proposed landing operations in 1942. Why did the allies not launch Normandy landings until two years later?
After the victory of the October Revolution, Britain and the United States were horrified by the birth of Soviet Russia.

the European battlefield of World War II was a battlefield connecting the East and the West. On the western front, the allies attacked the war potential of Germany using thousand-plane bombardment, opened up a second battlefield with the Normandy landings, and cooperated with the Soviet counterattack against the Germans. The Soviet army on the eastern front fought against more than 60% of the strength of the German army, weakened the main force of the German army, and made an indelible contribution to the defeat of German fascism.

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