Board Thread:Arrow discussions/@comment-1783334-20181120041427/@comment-1783334-20181123212254

The difference here is that Oliver's guest star in LoT happened 3 years ago and it was a small line mentioning someone else outed him so it's more likely it was overlooked whereas your quote was the same season as Savitar.

Then again, they did tie up why Ra's al Ghul never saw Sara as one of the League of Assassins in LoT, so who knows? They may seal that up later on this season.