Are the inconsistencies worth the pain?
If a timeline is truthful, it will likely contain new details.
If the truth is painful, take a metaphorical step back and take a literal deep breath.
Is this a new DD or am I being over sensitive?
Some count new revelations of old betrayals as Ddays; others only count "new partners" as Ddays.
Since I'm a lot further out than you, may I make a gentle suggestion?
Thank him for the timeline; thank him for his honesty (i.e. reward good behavior). Also tell him that you need time to digest the facts, and that you'd like to discuss the new revelations when you can do so without great emotion.
Also tell him that you need XYZ -- hugs, foot massage, warm cocoa, dinner out, whatever -- if you think it will help ease your pain.