
How did Eren control Dina? I understand that the power of the Attack Titan was to be able to see past and future memories of past, current and future holder of the Attack Titan (which is Eren looking at Grisha's memories led to Grisha being able to see future Eren and be influenced) and I understand that the Founding Titan could influence the biology and behaviour of the subjects of Ymir, but I don't understand how Eren could influence a subject of Ymir from the past. Like, the Attack Titan's power was seeing memories, it was not actual time traveling.
I feel like it's a plot hole?
(I also personally don't really like it, because it kinda adds the time travel paradox issues many time travel movies/series have - but that's just my own opinion.)