Imagine a hypothetical CL semi-final game between two sides comprised of these players:

La Liga Star XI: Casillas, Alves, Puyol, Ramos, Carlos, Zidane, Iniesta, Xavi, Ronaldo, Suarez and Messi.

Bench: Koeman, Marcelo, Modric, Kroos, Busquets, Neymar, Bale, Benzema, R9.

VS

Premier League Star XI: Cech, Walker, Terry, Ferdinand, Cole, Gerrard, Lampard, De Bruyne, Henry, Shearer, Salah.

Bench: Schmeichel, Van Dijk, Vidic, Neville, Scholes, Viera, Rooney, Hazard, Van Persie.

Imagine first leg being at Anfield and the second leg at Santiago Bernabeu. What would be the aggregate scoreline?