A carriage draws up, wheeling to a stop right in front of the camera. There is a cut and the camera has drawn back. The duchess steps out, pauses, then is on her way.
To the modern viewer the cut is almost invisible, but given the immense bulk of the cameras of the era -- the Biograph was the size of a large coffin and just as heavy --that brief cut and repositioning of the camera was a major affair, taking up an hour. Or perhaps they had two cameras set up together to shoot the two scenes. The Duchess was an important woman, after all.
Nonetheless, this was not an advanced movie for the era. The Scandinavians were already doing this sort of thing without much remark.