Board Thread:News and Announcements/@comment-9410476-20190411063651/@comment-2600:1702:3EC0:4B80:9022:B442:A5E9:21B2-20190626015342

...And where would this confirmation be coming from exactly?

It seems pretty clearly presented to me. SCaP happens, and Allen fails to save the Third Period. He wakes up again with all of these memories inside the black box once more. Heavenly states that, canonically in our timeline, Allen did not do what is depicted in SCaP, but simply skipped straight to Nemesis to stop her. O&L says that Sickle merged an Allen that failed in his timeline with the Allen of our timeline, giving him the memories of what happened in that doomed timeline to use to his advantage.

What more confirmation is needed?

We can't just say, "well to be safe we should ask mothy on twitter", because mothy barely, if ever, responds to twitter questions (especially not over plot developments that are intended to be obvious, I would think). I think we can safely say from the information that has been given to us that this is the intended reading of SCaP now.

IMO, the only point of confusion is how the bonus chapter plays into all this.