"A Song of Fire and Ice" author George .R.R. Martin is not always on the same boat as the producers of his novel series' TV adaptation, "Game of Thrones," especially when it comes to deviating plotlines. 

The events in the sixth season of "Game of Thrones" were all but a mystery to fans. It's the first time that followers of both the show and the novel have no clue what's going to happen — including what was going to happen after Jon Snow's death — because season 5 marked the point where Martin left off in his last published novel, "A Dance With Dragons."

Due to this, HBO producers Dan Weiss and David Benioff had to devise new storylines or change things that may or may not be in line with what Martin has in store for his yet-to-be-released follow-up novel titled "The Winds of Winter."

In an UFC Unfiltered podcast, "Game of Thrones" producers Dan Weiss and David Benioff admitted that Martin disagrees when they have to make changes to the hit HBO series.

However, the showrunners added that the author is always a "gentleman" about it.

"Not to say that George has agreed with everything we've done, but by and large, on the grander scale, he gets what you need to do to adapt something and he's a grown-up and a gentleman about it," the HBO producers said.

The pair added that despite this, Martin understands that sometimes TV and film adaptations need to break away from the books on which they are based.

"The great thing about George is that he worked in television for more than 10 years," Weiss and Benioff said.

"He'd got Emmy nominations before this [show] so he knew how the sausage got made," they said, adding that Martin was unlike a lot of authors who do not understand how the process of creating a TV show goes and thus, they tend to hold on tightly to the original material.  

Although "Game of Thrones" TV series only has two more seasons left, and with less number of episodes per remaining seasons, Weiss and Benioff revealed that they are open to a spin-off series that would still revolve around the fabled seven kingdoms of Westeros.

According to the showrunners, a spin-off series would be feasible, especially because Martin has built a whole new world and not just a story. With "Game of Thrones'" rich detailed history, the producers feel that there are lots of different ways to navigate the fictional country of Westeros and its neighbors.

Having just concluded its sixth season, "Game of Thrones" will return to HBO in 2017.