Possible to open a second bike window with the same document

To have two separate views of the same document? Typing this out I’m realizing this may go against the file/document model where documents need to be “saved” instead of being “living” like cloud

Yes, possible in two ways (separate view in new tab or new window):

  1. Window > Duplicate Tab
  2. Window > Duplicate Tab to New Window

Future feature question: Would this duplicate tab view allow for different filters of the outline for each window when viewing the same document?

Yes. Currently it allows for different selection, expand state. Whenever I add filtering it will also allow for different filtering.