Here’s a nerdy overanalysis I came across while going through some if my old DeviantArt stuff:
If the little SPD preview Before it Began is canon,then Ethan and Kira should recognize the SPD rangers.
Strangely,when the Dino Rangers meet the SPD Rangers,they don’t recognize them.This occurs in the first SPD/Dino Thunder Crossover,History,which takes place a year after the events of Dino Thunder’s finale.
The second SPD/Dino Thunder crossover,Wormhole took place somewhere towards the end of Dino Thunder’s second half,so it makes sense the Dino Rangers wouldn’t recognize the SPD Rangers.At the end of both crossovers,all present rangers have their memories of the events erased,except for Dr.O who disappears before that happens.
Kira,the yellow ranger,would meet Bridge,green SPD ranger,for a third time in Operation Overdrive’s Once a Ranger,however they don’t acknowledge any recognition between each other.At the end of Wormhole,Doggie erases the The SPD rangers’ Memories,as well as the Dino Rangers’.Bridge,though,should still have memory of Kira from their first encounter in History.
Kira doesn’t have any memory of meeting Bridge since her memory of him was erased twice,but she should still have memory of his outfit from the visions she received in Before It Began.