https://screenrant.com/the-flash-com...son-interview/
Right after that, about a year-ish after Return of Barry Allen they introduced Bart. I was about the same age, I was like thirteen, fourteen years old and I was a hyper little kid, or hyper teenager, and I freaking loved Bart. And I've missed him, you know?
In my 20s I became a Wally fan, and now as an adult, you know, I'm a Barry fan. But I still miss Bart. It was funny because I had these conversations over the last two years would come up of whether I was going to be able to use him or not. And it's the same thing, you can't just say, 'I wanna use him,' there has to be a story in play, there has to be a plan, there has to be some kind of thing we're going to do. It it was one of my dreams for FLASH WAR to be able to bring Bart back, that was a big part of it. To have this idea of being able to put him in the book, have a plan for him... I can't get too deep into it but certain things kind of aligned, certain things like the stars kind of aligned in the right spot, the right time, and I was able to pitch using him and it worked out.
So the idea that Hunter makes them break the Force Barrier, you think that all is lost, you think that Hunter won. Wally even says it, 'Well Hunter won.' But in a way he didn't, right? He beat them emotionally, but what he didn't realize was that he's allowed Bart to get out. Bart has basically been in there since Flashpoint, because Bart during the Flashpoint had that Kid Flash mini where he got trapped in there, and he thought he died. One thing I think people should think about is that... in DCU: Rebirth, when Wally came out of the Speed Force he was wearing a Kid Flash costume. Here we're in the same thing, he's coming out wearing his Impulse costume. To me he's still Impulse but that's a whole other thing.