While I do believe the brother are alive, the couple could be, I found abhorrent the idea of Scylla being alive.
And yes the memory return to Gowther is gone be a key role in the story from now on.
I wonder If Meliodas was referring the de javu to the prophecy or to the Oslo's portal?
–- Update From New Post Merge ---
@Ukimix:
Sure it's like a bad joke for Gerheade that after losing her eye and legs, her beloved reincarnated in a dog…
Have we been told about why Diane passed the test? I didn't see nothing.
She passed by running away, I don't know how it maker her stronger. Maybe by making her experience Dolor's dance first handed.