The Erwin strat I came up with managed to save 5 minutes from the previous record, there is still room for improvement, to not mention the in-dungeon loadings or the infamous R Square black screen (which was shorter this time, I think).

I managed to get the Jack Phase 2 skip but I failed the Edgar 2 Phase 2 skip for one HP. Pretty satisfied of this, not done yet, but I'll wait for the time to be beaten before attempting another!