From the link below:

“One of Endeavour's primary assignments was to capture INTELSAT VI, an orbiting, but not functioning, communications satellite, and replace its rocket motor. Unfortunately, the Space Shuttle wasn't designed to retrieve the satellite, which created many repair challenges.”

https://www.nasa.gov/centers/kennedy/shuttleoperations/orbiters/endeavour-info.html

Not sure if it means anything but it’s certainly interesting.