The time drive was taken from the Waverider by Rip and destroyed in his confrontation with Mallus. It was replaced on the Waverider by the one from the Jumpship. So how could Ray and Damien use the Jumpship to time jump to Zambesi 1992 and the other Legends also use it to time jump to Salvation 1874?
At 19:54 Nate says "and Jacks is wearing a wedding ring" - but in the shot Jacks arrives and the next shot of Jacks, he is wearing thick leather gloves.