LogFAQs > #966209022

RySenkari posted...

We have six Star Oceans and two Chrono games.

I've recently learned that the Chrono games have strange licensing circumstances even within Square Enix.

Speaking of which, could we ever see Chrono Trigger or Cross characters in Final Fantasy Brave Exvius?

Fujimoto: I am very aware that we receive a lot of requests about Chrono Trigger and Chrono Cross. We, too, want to have a collaboration with those titles, but its difficult to make it a reality due to circumstances involving rights and such.
If we ever do reach a point where the situation changes, we will of course look into the possibility of realizing this collaboration once again.

https://www.siliconera.com/interview-talking-final-fantasy-brave-exvius-after-its-4th-anniversary/

Seemingly more so with Chrono Trigger having bigger issues because Chrono Cross has been having collabs with other things (one of those is Brave Exvius itself).