Yeah, I know for Bran's story it's caught up, but the speculation you guys are throwing around is based on knowledge from the books. The amount of riders per dragon and max amount of riders and who can even ride dragons is something the show hasn't talking about at all. We just found out this week that people can even ride dragons. If it wasn't for someone spoiling it talking book shyt about aegon targaryaon 1000 years ago.
nah the speculation we throwing around is based on show shyt too. its not like ya didnt know bran can warg shyt. he done took over hodor and his wolf on the show already. him taking over a dragon is a guess.
as for dragon riding shyt, its been mentioned on the show that aegon and his sisters rode their 3 dragons during the conquest.