No. That's not right. Stuart rejoined Lee's camp on the evening of the second day. That is when Lee supposedly chewed him out (an incident a previous poster believes may not have happened.) It was on the third day that Custer and Stuart's troops engaged on the Northeast flank of the battle line somewhere near Culps' Hill. Stuart was hoping to get around the North's left flank and into their rear in a effort to exploit Pickett's charge. Custer had other ideas.
I stand corrected. I knew that the Custer and Stuart faced off at Gettysburg and that some historians considered it significant to the overall outcome.