Lenny Martinez (๐ซ๐ท Barhein) attacked at km 0, followed by Abrahamsen (๐ณ๐ด Uno-X). No pursuit, no other attack. After 2 or 3 km, when they had a gap of 25 seconds, Gachignard (๐ซ๐ท Total) jumped and joined them (the two ahead weren't pulling hard, they were waiting for him, they had hoped for an even bigger group).
And that was it.
edit: Ah! I read that Asgreen (๐ฉ๐ฐ EF) joined them, starting even later and imposing himself a solo chase of almost 10 km. To each his kinks, I guess ๐