Assumption in this case might be invalid
The process of bringing two craft together in orbit and hooking them up is a slow and methodical one, not particularly suited for warfare purposes. I think what they did instead is target an orbiting satellite with a single shot strike where the relative velocities between the target and the missile were in the range of tens of thousands of miles an hour. That's a bit tougher given the timeframe of just a few minutes from launch to strike. I may be wrong though.
Art