Nikki Bella and Artem Chigvintsev are tag-teaming quality time with their son, Matteo ... weeks after the "Dancing With the Stars" pro was arrested for domestic violence.
The retired WWE star came into contact with her estranged husband in Napa Valley on Sunday ... marking the first time the exes have been photographed together since their drama at home.
Their exchange was all business, as Artem arrived at the house he previously shared with Nikki for some one-on-one time with 4-year-old Matteo .