AT&T owns CNN.
The merger is still under appeal. AT&T has no say in CNN as of yet. Appellate arguments will be heard Dec 6th.
...while Time Warner has been rebranded WarnerMedia and has made a series of moves as it gets integrated into AT&T, the Turner Broadcasting unit has been kept in a silo removed from DirecTV or other distribution assets as part of an agreement struck at the time of the close.