[HoserHoser]

Scan photos as you have them, trying to keep similar events in time together. Then send them to Timeline Scan to date them so they're in chronological order.

Not sure what you mean by alphabetical order.

[zachwlewis]

From your site, under "How we find each photo's real date" section:

Sequence Neighboring photos

Photos scanned in alphabetical order often belong together, so nearby files can give useful context to each other.