In the intellectual history of communication studies, Lazarsfeld’s days in Vienna have received little attention, because such period is commonly regarded as discontinuity with his American days. Hence, a vital question is raised. Are the days of Lazarsfeld in Vienna incompatible with his American days? After revisiting historical records about early academic institutions and vital studies of Lazarsfeld, like the RAVAG Broadcasting Study and the Marienthal Study, the article finds out that though the mainstream narrative generally describes the Lazarsfeld’s days in Vienna and America as discontinuity, there are still many delicate connections between Lazarsfeld’s days in Vienna and America. Essentially, for the relation between Lazarsfeld’s Vienna and American time, it is reasonable to regard it as compatible instead of incompatible.