“I don’t know about that [or] what’s happening,” he said.
When asked if his relationship with Pitt was "over," he replied, “Well, whatever happens, happens.”
Maddox and Pitt reportedly had a falling out that may have sparked the "Ad Astra" star's divorce from Jolie, 44.
Jolie reportedly decided to file for divorce in 2016 after Pitt and Maddox had a fight on a plane — with the actress requesting full custody of their six children at the time.
According to TMZ, Pitt was reported to the Los Angeles Department of Child and Family Services amid allegations that he "attacked" Maddox on the family's flight home to the States from France.
Sources claimed that Pitt "was drunk" at the time, with Pitt's reps insisting that he "did not hit" Maddox during the altercation.
Video of the alleged incident was later reported to not show any violence, but was said to show Pitt "yelling."
Pitt and Jolie were allegedly in an argument when Maddox stepped in between the pair to intervene.
In December, Maddox and brother Pax, 15, posted birthday tributes to Pitt on Instagram. Maddox called the "Se7en" actor "the coolest dad."
The Associated Press contributed to this report.