Nah it’s 2 different stones. The tesseract is the space stone and Loki’s staff was the mind stone.
Looking back (just watched avengers 1 last night) Loki had 2 of the stones and he was on the same planet as a 3rd. He could’ve done some serious damage if he knew what he was doing
Ahhhh, okay that makes sense then. I was wondering how he was able to travel through space and do mind control as well. I need to rewatch a few of these again. Get my mind right for Endgame.