https://www.fox13seattle.com/news/passengers-report-ground-collision-between-2-delta-planes-atlantas-airport(no injuries, love the commentary once everyone realized what happened)
According to Delta Air Lines, the wing of an Airbus A350 taxiing out as DL295 from Atlanta to Tokyo-Haneda made contact with the tail of an Endeavor Air CRJ-900, DL5526 to LaFayette, Louisiana, on an adjacent taxiway, resulting in damage to the tail of the regional jet and the wing of the A350.
There have been no reported injuries at this time and customers are being transported back to the terminal where they will be reaccommodated on alternate flights.
There were 221 customers on DL295 and 56 customers on DL5526. At this time, no additional operational adjustments are expected.