After confirming with the Discord, it seems I cannot set-up the traditional auto-splitter for the Xbox version of the game, given the splitter is intrinsically tied to the background running of the PC version of the game. As such, I just stuck a timer on top of my run, referencing other runs for my starting and end points. I did not cut out any load times given the nature of how tricky this already is with PC runs.

If the community come up with an alternate to the PC only autosplitter, this is a run I would absolutely love to revisit. Sadly, it's impossible to be competitive when unable to remove the load times, and as it stands, I do feel a slight lack of inclusivity for platforms outside of PC.