Ok, hold on. Did I get this premise right...
Warrior of Light, adventurer and very much not an academic historian, sat at the table with 3 people and gave a pub retelling of his/her adventures and maybe a very light retelling of history. Imagine trying to retell the history of your nation over tea, what do you even know? This premise that "Because Venat had biscuits and earl grey with a time traveler really good at swinging a sword, she ought to know the whole timeline from there to then down to every minute event."
"Oh yeah Venat, there is going to this moment when uuuh people will get really good at magic. Be vigilant, at one point they just start destroying everything. Got that?"