So I took the dual octopus print and blew it up to 350% size; I wanted to test a 12+ hour print.
However, I ran into a problem on just the skirt. It was doing nozzle 2 first, and when it got to the left most part of the bed, the toolhead couldn't go left enough to complete the skirt, and was ramming itself into the leftmost part of the printer, drawing a straight line.
This of course threw off the x alignment, causing it to draw the first layer overlapping parts of the skirt. Nozzle 1 seems to be able to print on the entire x axis (except for maybe a few millimeters on the right side,) but nozzle 2 is clearly limited from printing on the left most side of the bed (due to the x motor.) Cura should give an error preventing the user from generating gcode that would have the printer print on these extreme x limits.
The gcode to reproduce: