Yep, this is from UEFA's website and, well, it's all as clear as mud! I expect though the big teams will be kept seperate and we end up with the usual teams in the knock out phase, Real Madrid, Barcelona, Man city, PSG etc.
https://www.uefa.com/uefachampionsl...champions-league-post-2024-everything-you-ne/
From the 2024/25 season, 36 clubs will participate in the Champions League league phase (former group stage), giving four more sides the opportunity to compete against the best clubs in Europe. Those 36 clubs will participate in a single league competition in which all 36 competing clubs are ranked together.
Under the new format, teams will play eight matches in the new league phase (former group stage). They will no longer play three opponents twice – home and away – but will instead face fixtures against eight different teams, playing half of those matches at home and half of them away. To determine the eight different opponents, the teams will initially be ranked in four seeding pots. Each team will then be drawn to play two opponents from each of these pots, playing one match against a team from each pot at home, and one away.
How will teams reach the Champions League knockout phase and will the format for the knockout phase change?
The results of each match will decide the overall ranking in the new league, with three points for a win and one for a draw still applying.
The top eight sides in the league will qualify automatically for the round of 16, while the teams finishing in 9th to 24th place will compete in a two-legged knock-out phase play-off to secure their path to the last 16 of the competition. Teams that finish 25th or lower will be eliminated, with no access to the UEFA Europa League.
The new format, with all the teams ranked together in a single league, will mean that there is more to play for all the way through to the final night of the league phase.
In the knockout phase, the teams that finish between 9th and 16th will be seeded in the knockout phase play-off draw, meaning they will face a team placed 17th to 24th – with, in principle, the return leg at home. The eight clubs which prevail in the knockout phase play-offs will then progress to the round of 16, where they will each face one of the top-eight finishers, who will be seeded in the round of 16.
To strengthen the synergy between the league and knockout phases, and to provide more sporting incentive during the league phase, the pairings of the knockout phase will also be partly determined by the league phase rankings, with a draw which likewise determines and lays out the route for teams to reach the final.
From the round of 16 onwards, the competition will continue to follow its existing format of knockout rounds leading to the final staged at a neutral venue selected by UEFA.