1. No, you cannot measure the RSSI of the destination module.
2. I do not understand your query, please elaborate.
On the hello_client app, I added the following line (after line 1101) in the scan result callback function and I was able to read back the RSSI when the client connects to the sensor.
WICED_BT_TRACE(" RSSI : %d \n", p_scan_result->rssi );