[Spktyr]

X-37B is likely an on-orbit recon system that can also deploy additional satellites and drag them onboard to service them. To bring it back to terrestrial terms, the X-37B is more akin to an aircraft carrier than an aerial tanker. Or maybe an amphibious assault ship/carrier. If this was a successful Chinese refueling between orbiting satellites, it's more like this:

Navy guys and students of history should immediately get why this is a *bad* thing for us. Apparent-peer-to-peer refueling has a whole bunch of unpleasant implications.

[PIF]

X-37B is likely an on-orbit recon system that can also deploy additional satellites and drag them onboard to service them
—

Just guesses. It could also be used to trade goods to aliens for all we know.