Last 2 nights both the ISS and SpaceX's Dragon cargo capsule were clearly visible over my location (Waalre, The Netherlands).
I got great help of two friends setting up the camera & tracking the spaceships.
In the night of July 19th they were still separated 4 minutes. ISS already passed when Dragon showed up.
However, in the night (early morning 03:35 local time...) of July 20th they were separated only 15 seconds / 115km.
One really sees the two 'following' (trailing) each other (ISS is followed by Dragon).
We had a bit of a challenge with the full moon. Fortunately, the basketball field helped out a bit as you can see on this picture: http://www.pa3guo.com/DSC_7644.JPG ISS is the bright stripe, the more dimmed stripe (below) is Dragon. Exposure (lens open): 10 seconds. ISS was approaching.
Subsequent pictures are here: http://www.pa3guo.com/DSC_7645.JPG http://www.pa3guo.com/DSC_7646.JPG http://www.pa3guo.com/DSC_7647.JPG http://www.pa3guo.com/DSC_7648.JPG (here you see Dragon best) http://www.pa3guo.com/DSC_7649.JPG
Then my two friends noticed during the final period of the pass that the Pleiades ("Seven Sisters") were accompanying them: http://www.pa3guo.com/iss_dragon_waalre_20jul2016.jpg
Well, I finally saw a cargo ship and the ISS passing by together, it was truly a spectacular view !!
Best regards, Henk - PA3GUO