So.. Not sure if this is known at all, but playing through NG+ I accidentally skipped the first cutscene with Nero when I put down an earthly star right before I triggered the boss zone. So I ran through again and figured out you can skip the first cutscene with Gaius as well. I gave it a few more runs (mostly because you need to be kind of in specific spots for the Nero cutscene to even skip) and finally got both in 1 run. I googled this a bit and couldn't find anything on it, and it doesn't seem to be breaking any rules that I could find so.. yeah.. star skip?