1, 48 teams in the group stage were divided into 12 groups, with 4 teams in each group, and the home and away games were double-cycled. Finally, the top two teams in the group advanced to the knockout stage.
2. There are ***32 teams in the knockout stage, of which 24 teams are from the group stage and the other 8 teams are from the third place in the Champions League group stage. There are 5 rounds in the knockout round. Except for the final round, the other four rounds will be eliminated in two rounds, home and away, and the winner of the two rounds will advance to the next round of elimination.
So 16 teams played against each other and played two rounds at home and away. In the end, the winner of the two rounds advanced to the top eight.