In the following article from Entertainment Weekly 'Constantine' team on why NBC character isn't bisexual, smoking cigarettes, the producers claim they could not glorify the character’s smoking due to network content standards.
For the show, producers say Constantine is indeed a smoker … just don’t expect to actually see him smoking. Producers say there’...
The show remains more faithful to the source material than the 2005 film, although on-screen depiction of Constantine's chain-smoking habit was said to be curtailed because of broadcast television restrictions (the network eventually becomes more lenient and John is shown smoking on screen in later episodes)
Link to the referenced article:...
In general, the Arrowverse interpretation of Constantine is far more closely aligned to the comics than the movie version. Some of the key aspects where the movie diverges:
Constantine is from Liverpool, so Ryan's accent is far more accurate than Reeve's.
Constantine was famously drawn specifically to look like the musician Sting, so Ryan physically ...
The way they define the term, no; the way fans define the term, yes.
There have been several cases where they producers have used the term "Arrowverse", or have otherwise described the "world" where Flash and Arrow exist. In those cases, they have always kept Supergirl separate.
Early on, in one of the first interviews about Supergirl, Andrew Kriesberg ...
According to this quote from Andrew Kreisberg the creator of the 4 shows
As revealed during The Flash-Supergirl crossover last year, Supergirl
hails from a different universe. Are you planning on bringing
Supergirl into our universe? Not for her entire world, but Kara will
be traveling from her dimension to our dimension, “our” being the