'The Spanish war and other events in 1936–7,’ he wrote ten years later, ‘turned the scale and thereafter I knew where I stood. Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic socialism, as I know it.’ (1984, George Orwell)
Now, 1936-1938, this is, exactly, the period of time, when Heidegger wrote about his thesis on 'ereignis'.
In other words, they were living through the world, simultaneously, yet differently.