Nate appears to have no blood on him after facing Ray/Neron, but his face is covered in cuts by the time he meets Zari on the bridge.
Nate quotes Ray by referring to the fugitive as a "myth-tery". However, Nate was not present when Ray used the term in "Witch Hunt".
RomantiCon 2019 is supposed to be happening in Seattle, but the establishing shot for it is very clearly not the Washington State Convention Center, where such an event would typically be held.
During the flashbacks of all the times Gary had been treated badly by everyone, the scene where Mick pulls out Gary from the trash bin in Here I Go Again (2018) was included, despite this apparently being a simulation created by Gideon to prevent Zari from leaving the Legends and therefore, Gary should have no memory of this.