Makes little sense.
The Killers have 6 straight nights in the O2 arena until 11/07, so they had only available the 12nd (Dua Lipa) or the 13th (Pearl Jam).
NOS needed someone for 11/07 so they ended up inking Arcade Fire. Mad Cool couldn't because a) BBK already had them, so unlikely they would share b) Arcade Fire had no avaliable dates for MC (they play 11 NOS, 12 Sevilla, 13 Bilbao). So they went with The Killers and I don't think it was their main option since they already played in 2022, probably a sub for FF or someone else they may have lost.