In the very first few minutes Ebony Maw presents Thanos with the space stone and says to him that no one has ever had the power and honor to wield 2 infinity stones at the same time.
Is this a mistake? In the first Avengers movie, Loki DID. He received the scepter that contained the mind stone (which we only discovered during "Age of Ultron") from Thanos himself, in the hopes that Loki would bring back the space stone from earth. Loki wielded both stones for the entire movie.
The question is, am I missing something? Is Ebony Maw wrong? Hard to imagine that being the case, since Thanos was deeply involved in Loki's actions in the first Avengers movie. Is this an oversight by the writers? Has there been any explanation for this?