Yeah. I currently have some eggs in the incubator from the other pullet (the one I put a picture of it earlier sitting on a table), and two of them has blood vessels.
One of them has a heart inside I could see before, and now it got darker and it seems like more stuff are forming, and it's good with movement I can see.
The other one is quite weird. So I want to mention first that this egg was layed onto the table and it hit it and had a small crack in it, but that was only in the outer shell and not in the inner shell, meaning only the calcium one, so I sealed it using wax because I found that online and thought I wouldn't lose anything giving it a try, and so I put it in the incubator and now it has veins that are all up and not going that much down, atleast yesterday they were because I didn't candle yet today. I also can't find the heart or something like that, but the veins seems to be moving slightly every second as if a heart is beating through it so I guess it's alive.
The rest seem to not change at all. Today is day 8 for one of these two eggs and day 9 for the other.
I guess if these hatch, I can also bring some different types from the shop and put them with them so they live together, and grow up together, they could replace that chicken.