I made a quick simulation of that scenario, and there’s a case in which I made the advancing player NOT face either the eliminated player OR any of the players that beat the eliminated player.
In this case you take away many odds because Hera (advancing player) beating ACCM (eliminated player) first day removes a lot of odds.
If there’s a player that played both players that aren’t playing last day, also many odds are eliminated.
So I went for that specific case:
After day 4 wins are 4 (advance)-3-3-3-2-2-1-1-1-0 (eliminated)
One of the 3WP faces another 3WP
the remaining 3WP, who had lost against one of the other 3WPs, can’t face any of the 2WPs, so he is scheduled against a 1WP (the same happens if you schedule the other 3WPs, the remaining one can play one of the 2WP but there’s a 1WP who already faced the rest of the players available)
The 2WPs face each other
The remaining 1WP face each other
It looks good except for one matchup, but this matchup leads to the 3WP not being able to advance as the 2nd, because even if he wins, there will be another 4WP (the one who wins in the 3WP duel) who will take a higher Buchholz points (+3 vs +1).
This can also assure a spot for the player who faces him as 8th with just 1W due to taking +3 or +4 Buchholz points (remember, there’s a 1WP duel that will leave a 1WP with a low Buchholz number)