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CHALLENGE The_ CHAMPIONS LEAGUE, The_'s CHALLENGE CHAMPIONS LEAGUE
it's obviously a typo; it meant a bracket for 1/128, i.e., an increase in qualification by 1 round.
Round 1/128 implies 128 pairs; the number after the fraction indicates the number of pairs, not the number of participants (for example, in 1/2, 4 teams play, not 2).
The selection principle has already been answered more than once, even three times; you can find detailed answers to this question on the next page. In short, it's based on rating + all merits/achievements in the SOD.
I was asking about the qualifying round; everything is written and clear about the groups.