[Alan Anderson]

Whether or not the two inputs can change simultaneously doesn't really matter here. The flags in the data packets can, and do. Regardless of the state of the autonomous input, if the disable input on the competition port is active, the robot is executing the teleoperated code, not the autonomous code.

This is true with a 2005 OI and RC, anyway. I'll discover if it's still true with the 2006 system as soon as we start scripting our autonomous routines.