An initial user interface description is transmitted from a generation component to output modalities which include styling components configured to supplement the initial user interface description with layout information. The output modalities each include rendering components configured to render outputs based upon the initial user interface description and the layout information. Initial user interface description delay times between transmitting the initial user interface description from the generation component and rendering the outputs on the rendering components are determined, and a reference delay time is also determined based upon the greater of the initial user interface description delay times. Correction times are determined based upon the reference delay time and the initial user interface description delay times, and a subsequent user interface description is transmitted from the generation component to the output modalities based upon the correction times, such that the subsequent user interface description is rendered at the rendering components substantially simultaneously.