There are some good reasons for Germany not to have taken a Soviet armistice request in most of 1941 (it looked good for Germany for most of that year). But what about in the time period between Stalingrad and Kursk. I remember reading somewhere that Stalin was so impressed that after Stalingrad the Germans were still strongly resisting that he felt final victory was going to come only at a huge cost. So, maybe sometime in the spring of 1943 might have been that most realistic time for an armistice.
Not saying that this was ever a very likely scenario, but if it was going to have happened, maybe that was the time.
Not saying that this was ever a very likely scenario, but if it was going to have happened, maybe that was the time.