As much as Blue Beetle is a breath of fresh air, there are nods to the other DC movies that preceded it. Xolo Maridueña's Jaime Reyes mentions existing heroes like Batman and The Flash, seemingly acknowledging the existence of the Snyderverse. Of course, seeing as the DC movies are trying to move forward into James Gunn and Peter Safran's vision for the DCU, "Gods and Monsters," these references are subtle.
Source：https://www.cbr.com/blue-beetle-fixes-man-of-steel-mistakes/
