Well if you've got two why not experiment? You could try one in water & in mix. I've done it both ways & didn't use a dome when doing it in dry mix (tho' that CAN take as long as a year). The one done in water, grew a small sized green tuber resembling a green pea & then grew a root as well.

The fact of their being a bit yellowed may not help, but oh well; nothing you can do abt that.

FYI: may not be that bad a time to try this, I noticed over the holiday one of my 2 ZZs is pushing out a new sprout. So maybe you CAN make this happen. Good luck.

I've done leaflet cuttings and 1 1/2 years later I have 1 lonely frond c 4 leaflets 2 " high...
Very slow going...

i scored a whole plant! good thing as the cutting dont look much better, ill try to do some pics some and highlight the differences between this and other zz's I have

I like this one the best...If only there was one with stems 10 feet tall...

Terrific!! I look forward to pix...