Sabine's Lightsaber in Rebels

There are several shots in the extended footage that they showed in the room of Sabine using Ezra's lightsaber. I think a weapon is a weapon and her vision out would be another, she's not going to use it if he's back, right? Unless all of that stuff is from like the first episode, I just feel like, I would be surprised if anything in that trailer is from the first two episodes. It seems like they have to parcel out thrown, like throw, how much throng do we get in this if we are marching towards heir to the empire? He is going to be this big bad. Is it something where it's just like, like Thanos was a