User blog comment:Тостер/Constantine: City of Angels. Arrowverse? Retcon? WTF?../@comment-35112931-20180326170614/@comment-1854917-20180326181021

And, well, Chas Chandler freaking appearing in it in his CW form. Anyhow, as I've said, even if it is not canon, it was originally made for Arrowverse which makes it eligible.