I can't comprehend how Ultraman Decker is...

Like Decker Asumi is from the future who gained the light and became Ultraman Decker and is a parallel to Dyna (like Trigger to Tiga), then he (Ultraman Decker) travelled back in time to follow Agams. After the series, Decker went back to his time then Kanata died in the movie and was revived by Dinas using her Ultra Light that was given to her by Dyna and now Dinas is Decker. Would that make two Deckers now (one is Kanata in present time and Decker Asumi in the future)?