Only technically. Austria was historically always seen as part of the German nation, just not part of Germany-the-country for purely political reasons – first t

Only technically. Austria was historically always seen as part of the German nation, just not part of Germany-the-country for purely political reasons – first the Habsburgs didn't want to subjugate themselves to the Prussian upstarts, and when Austria-Hungary fell apart, the Entente forbade Austria to join Germany, but couldn't prevent the two from closely cooperating, nor the German population from accepting Austrians. So nobody saw him as a migrant. Only after WW2 did the countries and societies start to drift apart (to no small part due to Hitler's semi-forced Anschluss of Austria).