Yeah, I'm pretty sure this flashback isn't over. I've went back aand looked at the flashbacks of, in order
-Zoro
-Ussop
-Sanji
-Nami
-Dorry and Broggy
-Chopper
-Vivi
-Calgara (Wyper)
-Franky
-Robin
-Brook
-Ace
-Whitebeard
-Luffy
-Jinbei
-Chinjao
-Kyros
-Law (Doflamingo)
-Sabo
-Wanda
-Sanji again
-Big Mom
-Luffy with Ray
-Gyukimaru
Which I think is all the big ones and some little ones. Don't think I've missed any important ones anyway.
And in every one of them except for Nami's, the flashback ends with the black border fading into white and the person remembering the past thinking on the flashback. Now, this could be done in like two panels next chapter, to be fair, with Kin'emon thinking about Ode's last words to him.
But considering the flashback is yet to show the death of Toki, the burning of Kuri Castle, the Scabbards getting split up, Momo meeting Kaido, or Kaido deciding to hunt them to find the secrets of the world (is this something that happened in the present day?) I really don't think it's over. The narration- "and so ended one legend, to be carried on by players of the next stage. The story hurtles to the present day!!" is like the one we had about the hour of legends. The legend of Oden and his part in the story ended, the story is moving on to the new players (Oden's children and the Scabbards). And we will see Toki literally hurtle some of them into the present day.
Or I'm totally wrong and the first page next week will cut straight to the present. But 23/24 flashbacks following the same pattern is too much to ignore.