Undercover Satellite

I have no formal training but have been satellite spotting with my father for almost 20 years. Tonight I saw what appeared to be two satellites moving almost in a parallel orbit but One was moving slightly on an angle toward the other and was moving slightly faster. I noted this Becuaue I always pay extra attention to multiple in proximity. Then the one seemed to be closing in and tracking the other from what looked to be much higher up but closing in on it in from the southwest to north east. The one that was being tracking was moving almost directly south to north. The one that came from behind got what in my view was pretty close and then veered almost 90 degrees within a split second, it was almost instantaneously. It then resumed a straight but noticeably slower path directly east southeast after and looked just like any other satellite again. I would never report this if I didn’t see this. I don’t know if it was USA checking out something flying over our airspace or if it was something tracking one of our satellites but saw exactly what I just described it there is zero chance either of them were airplanes. I have NEVER seen anything like that before. And what creeped me out was it seemed to notice that I noticed or something else noticed it was tracking the other object and then tried to look as if it were any other satellite. Just after making what I saw was a serious change in direction in less than a second, it seemed intelligent or controlled and was trying to look like a satellite from the ground or what have you. If someone could get back to me on this I would be enveloped. Please bring me into the black projects I feel like I was meant to see that. I then saw another satellite on the exact same trajectory as the one being tracked not even two minutes later.