There could be various possibilities. Maybe Don has written fan fiction based on DC Comics characters, or perhaps Don has attended events related to DC Comics. But without more context, it's hard to say for sure.
It's difficult to determine exactly. Maybe Don cosplays as characters from DC Comics or participates in DC Comics-themed discussions and forums. But that's just speculation without more details.
Will Smith has no direct connection to DC Comics. He hasn't been cast in any major DC movies or involved in their comic book projects.
I'm not really sure. Maybe they have some sort of licensing deal or collaboration, but I haven't heard much about it.
Haven and DC Comics don't have a direct connection. They operate in separate fictional universes.
Not much. Will Harper isn't a prominent or widely-known figure in DC Comics.
Not much connection actually. Calculus is a branch of mathematics and DC Comics is about fictional characters and stories.
Not much connection actually. Trains are mainly about transportation, while DC Comics is focused on superheroes and fictional worlds.
Black Batman might refer to a particular version or alternate interpretation within DC Comics. It could involve a unique costume or story arc.
The two, Sonic the Hedgehog and DC Comics, have no significant connection. DC Comics focuses on superheroes and complex story arcs, while Sonic is known for his platforming adventures. They are completely different in nature and scope.
To my knowledge, Don McLean has no significant link to the world of comics. His work is centered around music and songwriting rather than anything related to comics.
I think it might be a fan-created concept or perhaps part of a theoretical comic idea that hasn't been officially developed. Maybe it involves time travel through black holes and characters from both DC Comics and Chester cartoons interacting in a unique way.