Was it true that operation barbarrosa was intended to be finished in 6 weeks?

Question

And with that make the Germans motivated once their objectives were met they would be going home? (esp. they feel invincible with their panzers and initial war success)

Answer 1

The bulk of the campaign was projected to last 6 weeks. This was the estimate that the German high command had of how long it would take to destroy the Russian army. In actual operations, this estimate was not far off. What they hadn't counted upon was the ability of the Soviets to field another army of equal size so quickly, and another after that, and another after that, and another after that. . . . .

Answer 2

Operation Barbarossa was indeed planned to be completed in six weeks. But Nazis were not going to go home after that; their plan was to exterminate all Jews and Gypsies they could find, destroy Moscow as a symbol of Russian statehood by flooding its central part and blowing up some of the rest, settle as landlords on the Russian, Ukrainian, and Belorussian lands, and turn their population into indentured servants or slaves.