The big bosses did that so when Lucifer sent the information to Blaze through telepathy, it would be easy.
With just one 'click and download', Blaze would be able to receive all the information.
The only downside was that Blaze might be a little dizzy or get some headaches because of the sudden surge of information.
Raguel and the other demon lords gathered the information in just the count of minutes and Raguel transferred all the knowledge he gathered into the same 'packed memory' before sending it out to Lucifer through telepathy.
This kind of skillful manipulation of telepathy and sorted memory were unique to big bosses like them because big bosses like them usually gave out memory inheritance, knowledge inheritance or ability inheritance to a few people that they had chosen.
Because of this, it was not difficult to compile a 'Yin and Yang Balance' inheritance knowledge for Blaze.
