No problem!

I think you're right. It is BLUE BLUE... and yeah, it's a really weird move

I tried death march combo and had the same problem myself, however I'm pretty sure it's miss labelled. It's blue blue, not yellow yellow, ngl death march is so useless and dog water, probably why its miss labelled and not fixed, the combo itself is extremely slow and sluggish, leaving your sword high above your head, "marching" forward and eventually striking down. During that down time it leaves you incredibly exposed to a lunge attack, and really any fast attack or even a push.

Prob why it's called death march since your endangering yourself more then the actual opponent your fighting, your doing yourself a huge disfavour by attempting this combo so it's best to not try.