For people who didn't understand the chronology of events, this will hopefully be of some use.
3 months prior to the Egghead incident:
York informs the Gorosei that Vegapunk is researching the Void Century.
3 weeks before the Egghead incident:
York steals a fragment of the Mother Flame's energy and sends it to Mary Geoise.
Cobra is killed
Imu declares his desire to use the Mother Flame.
2 weeks before the Egghead incident:
Vegapunk notices that a fragment of the Mother Flame's energy has been stolen.
1 week before the Egghead incident:
Vegapunk discovers York is the traitor
6 days before the Egghead Incident:
Imu and the Five Elders use the fragment of the Mother Flame to activate an ancient weapon to destroy the Kingdom of Lulusia.
Vegapunk notices the effects of the ancient weapon and sees signals of global earthquakes.
Vegapunk plans to make a broadcast and to kill himself.
2 days before the egghead incident:
Vegapunk makes his broadcast, then proceeds to erase the last 2 weeks of his memory.
Egghead's Incident:
SHPs and CP0 land on Egghead.
Since he didn't have any of his recent memories, Vegapunk decided to ask the SHP for help, and that's why he used Seraphs to attack the CP0.
From now on, I think the chronology of events is pretty obvious, so there's no need for further explanations.
3 months prior to the Egghead incident:
York informs the Gorosei that Vegapunk is researching the Void Century.
3 weeks before the Egghead incident:
York steals a fragment of the Mother Flame's energy and sends it to Mary Geoise.
Cobra is killed
Imu declares his desire to use the Mother Flame.
2 weeks before the Egghead incident:
Vegapunk notices that a fragment of the Mother Flame's energy has been stolen.
1 week before the Egghead incident:
Vegapunk discovers York is the traitor
6 days before the Egghead Incident:
Imu and the Five Elders use the fragment of the Mother Flame to activate an ancient weapon to destroy the Kingdom of Lulusia.
Vegapunk notices the effects of the ancient weapon and sees signals of global earthquakes.
Vegapunk plans to make a broadcast and to kill himself.
2 days before the egghead incident:
Vegapunk makes his broadcast, then proceeds to erase the last 2 weeks of his memory.
Egghead's Incident:
SHPs and CP0 land on Egghead.
Since he didn't have any of his recent memories, Vegapunk decided to ask the SHP for help, and that's why he used Seraphs to attack the CP0.
From now on, I think the chronology of events is pretty obvious, so there's no need for further explanations.
