1. Expect further clearance means what it says. They tell you the time you should expect your next clearance. Sometimes ATC will tell you to expect another altitude, route, or approach before they actually clear you for it. If your radio failed, you would factor that expected clearance into your next move. For example, if you were told to expect an approach, you should wait (hold) at the clearance limit until the EFC time and then shoot the approach.

2. An HSI never gets reverse sensing when tuned to a VOR....NEVER, EVER. Simple as that.