dose octoprint work with XYZ printers as they use a proprietary file format
This graphic which discusses the Slic3r software configuration seems to indicate that the da Vinci printer, at least, uses reprap/Marlin, etc:
And yet, that same page describes what this guy had to do to make the gcode file from Slic3r work...
The process described takes the normal text-file output, encodes it as Base-64 and saves it with a
.3w file extension.
That said, you couldn't stream this via OctoPrint since it's not a text file.