Cowboys defensive end Greg Hardy just doesn't get it, according to Brandon Marshall.

On Tuesday night's episode of Showtime's "Inside the NFL," the Jets receiver expressed concern over Hardy's behavior and his lack of self-awareness.

During the panel discussion, Marshall said his own emotions got the better of him on Sunday when he "got into it" with a teammate during the Jets' 30-23 loss in New England. But he pointed out that there's a difference between that and the sideline behavior Hardy displayed during the Cowboys' loss to the Giants on Sunday at MetLife Stadium.

"There's emotions that come with the game," Marshall said. "There's a lot of testosterone. I mean you put so much into the week, you know you get disappointed and you get frustrated in those moments.

"This Sunday, I got into it with a teammate but we got in the locker room, we talked it out and we love each other."

But that wasn't the case with the Cowboys.

Hardy was involved in a sideline altercation with special teams coordinator Rich Bisaccia and some of his Dallas teammates after Giants receiver Dwayne Harris returned a kickoff 100 yard for a touchdown for a 27-20 fourth-quarter lead. Hardy smacked the clipboard Bisaccia was holding, which resulted in the assistant coach pushing him out of the huddle. Hardy then exchanged words with receivers Devin Street and Dez Bryant.

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"This is a sensitive topic for me," Marshall said, "because I've overcome a lot of things and I'm really passionate about guys building character, guys really looking [at] themselves in the mirror and trying to get better. Every game I know there's going to be two or three cameras in my face. Why? Because I'm a high-emotion guy and because of my history. I am aware.

"When I look at Greg and how he's handled himself, on the field and in the locker room, I see a guy that is not aware. He doesn't understand the magnitude of what happened last year, what he did and the atmosphere surrounding the NFL. I don't think that he gets it. I don't think that he learned his lesson. And he really needs to look himself in the mirror and ask himself, what type of person do I want to be?"

Sunday's outburst is the latest in a string of troubling incidents involving Hardy, who signed a one-year deal with the Cowboys in March that could be worth up to $13.1 million.

In May 2014, he was arrested and charged with assaulting and threatening to kill his former girlfriend, Nicole Holder. The charges were dropped in February 2015 because Holder refused to cooperate with the district attorney's office after receiving a financial settlement from Hardy, according to ESPN.

Though he initially was suspended 10 games by NFL Commissioner Roger Goodell in April, an arbiter reduced Hardy's suspension to four games.

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This spring, the defensive end tweeted an insensitive remark about the Sept. 11th attacks on the World Trade Center. He also made headlines earlier this month when he commented on former supermodel Gisele Bundchen, the wife of Patriots quarterback Tom Brady, and said he hoped to "come out guns blazing" in his return from suspension against the Patriots.

On Sunday, however, Cowboys owner Jerry Jones called Hardy a "leader" and the organization announced it would not discipline him for his sideline behavior.

"Right now Jerry's only focusing on the player," Marshall said, adding that Hardy has a reputation for being "one of the hardest working guys on the field.

"It's time for us to start talking about the person. It's time for us to start dealing with the person. If we want the product on the field to be great, if we want to protect the shield, then we have to approach both the same. . . . I hit rock bottom, and the awesome part about this whole deal is, we get exposed."