That simply is not the way that it works. Liverpool isn't getting the winner of the 9-24 game. The top two teams in the league table, Liverpool and Barca, were guaranteed to get the teams in the 15, 16, 17 18 group. That is what the draw is for, to determine which of Liverpool and Barca will play the winner of 15 PSG versus 18 Brest or 16 Benfica versus 17 Monaco.
The 9-24 game is Atalanta versus Brugge, and the winner of that game will play either 7 Lille or 8 Aston Villa. The other of Lille and Aston Villa will play either 10 Dortmund or 23 Sporting.
The knockouts are set up exactly like a seeded tournament, with the exception that to irrationally maintain the need for a draw, instead of say 9 will play 24 and 10 will play 23, they said we will have a draw to determine which of 9 and 10 play which of 23 and 24. And the round of 16 is the same way. Instead of saying 1 will play the 16-17 winner and 2 will play the 15-18 winner, they will have a draw to determine which teams get paired with which teams.
If the sports dailies in Barcalona really can't figure it out, they could just go to the UEFA web site, where they show the whole thing in bracket format for easy reading. Sure, they made it unnecessarily complicated, but it really isn't all that complicated if you just look at what they did. The people working at the dailies have to be complete morons to not understand it.