Each division will play another division opponent based on the position they finished the previous year. Last year the Cowboys finished 1st in their division and played the AFC North Division winner. The Eagles finished 2nd and played the AFC North 2nd place team, and so on. Next year, with the Eagles winning the NFCE they will play the AFC South division winner. The Cowboys will play the AFC South 2nd place team. The Giants the 3rd and the Commanders the last place team.
This year the Cowboys played 6 games against the NFC East, 4 against the NFC North, 4 against the AFC South and 1 each against the NFC West, NFC South and AFC North. Since th Cowboys won their division in 2021, they played the 1st place teams in the NFC West (RAms), NFC South (Bucs), and AFC North (Bengals)
Next year they rotate which divisions they play in the NFC and AFC so they will plays 6 games against the NFC East, 4 games against the AFC East, 4 against the NFC West, and 1 each against the 2nd place teams in the NFC South, the NFC North, and the AFC South assuming Dallas finishes in 2nd place. If they should overtake the Eagles, they will play the 1st place teams again. Right now it looks like we will play the Packers again, the Titans or Jags again, and Carolina, New Orleans or Tampa again.