>>493416The thing is, they have been at it since the beginning , sort of.
Since both of them knew no one from in Hololive prior to joining it just made it so they stuck together and by October of 2019 they were already a defined pairing, Noel has always been a nervous wreck when it comes to collabs so often it just ended with both of them just playing Minecraft or Ark for hours on end.
Their relationship and character really hasn't changes much, it's just both of them getting more comfortable with the other